경막 내 colistimethate 투여로 치료한 다제 내성 cinetobacter baumannii 뇌실염

홍유아,유진홍,김진진,모은영,안건희,정희경,김진석,이현정,정미향,윤승배 대한감염학회 2009 감염과 화학요법 Vol.41 No.4

Acinetobacter species is a non-fermentative aerobic gram-negative coccobacillus that is an important pathogen found in nosocomial infections. Recently, multi-drug resistant Acinetobacter baumannii (MDR-AB) infections have been increasing and pose a serious problem. Most such infections present as bacteremia, pneumonia, or a wound infection; however, CNS infections are very rare. We herein present a case of ventriculitis caused by MDR-AB in a 37-year old man after a neurosurgical intervention. The patient was successfully treated with intrathecal colistimethate.

고어텍스를 이용한 비성형 5례

진홍률,양상권,최영석 충북대학교 의과대학 충북대학교 의학연구소 1999 忠北醫大學術誌 Vol.9 No.2

비성형수술에 삽입하는 사용물로는 자가연골이 가장 이상적이지만 필요한 만큼의 충분한 양을 얻기가 힘들고, 수술시간이 길어지며, 흡수가 일어날 수 있다는 단점이 있다. 이러한 단점을 극복할 수 있는 이종이식물 중에서 고어텍스는 최근에 개발되어 사용이 점차 증가하고 있는 추세이지만 아직까지 고어텍스의 임상적 효용성에 대한 보고는 드물다. 저자들은 고어텍스를 5명의 융비술 환자에서 사용하였는데 3명은 연골과 같이, 2명은 고어텍스 단독으로 사용하였다. 이 중 1명에서 감염이 발생하여 고어텍스를 제거하고 늑연골을 이용하여 융비술을 다시 시행하였고 나머지 4명은 모두 만족스러운 결과를 얻었다. 평균 20개월의 추적관찰에서 이식물의 이동이나 탈출, 피부의 손상 등의 큰 부작용이 없어 고어텍스가 비성형, 특히 융비술에 유용하다고 판단되어 관련문헌 고찰과 함께 보고하는 바이다. Though autogenous cartilage remains the ideal graft material in nasal surgery, situations exist where an alternative or an additional grafting material is needed. Gore-Tex is one of most recently developed alloplastic material and has been widely used for rhinoplasty. But there are few reports about the clinical efficacy of this material in rhinoplasty. The authors used Gore-Tex as a nasal implant in 5 cases of augmentation rhinoplasty. In three patients, the Gore-Tex was used with septal or conchal cartilages because the cartilages were not enough for the needed augmentation. In one patient, the implant was removed due to postoperative infection and subsequent augmentation was done with autogenous rib catilage after infection control. During average 20 months of follow-up, complications such as absorption, mobilization, or extrusion of the implant and thinning of the nasal skin were not found. All patients were satisfied with the surgical results. From these results, Gore-Tex can be considered as an effective material in augmentation rhinoplasty when autogenous material is not available or is not sufficient for the proper augmentation.

Calcium phosphate 결정 성장 최적화를 위한 Ti 표면의 BaTiO_3 박막 형성에 관한 연구

조진우,양홍서,박영준,황규석,송종은,이용렬 전남대학교 치과대학 2001 구강과학 Vol.13 No.2

This study was purposed to establish an optimized manufacturing process for a negatively charged ferroelectric thin flim on titanium substrate in order to develop a new implant system having the mechanical strength and bone forming ability. Ferroelectric materials show an alignment of positive and negative charges by poling treatment. Based on this property, this study was performed with the assumption that the Ca^2+ ions would be easily attracted on negatively charged surface and the attracted cation might behave as nuclei for bone-like crystal grownth in biological solutions. In order to have an osteoinducibility by the ferroelectric thin film coating, continuous and flawless crystalline thin film should be formed with ferroelectricity, and finally should be adequately poling treated. In this study, BaTiO_3 (BTO) was selected as a ferroelectric material. Before thin film coating process, most favorable poling condition was investiged with the evaluation of the difference in calcium phosphate (Ca-P) formation in simulated body fluid (SBF). Moreover, the parameters to form an optimum thin film were studied. Dense bulk BTO disks were fabricate using cold isostatic pressing(CIP) and sintered in air at 1300℃ for 2 hours. Sintered BTO disk was polished, and he crystallinity, microstructure, and ferroelectric characteristics were evaluated using an X-ray diffraction analysis (XRD), a field emission scanning electron microscope (FE-SEM), and an Impedance analyzer. To find the optimum poling condition for the calcium phosphate crystal formation, sintered bulk BTO specimens were treated with either of following poling conditions; 1) room temperature poling treatment [ polarizing field (Ep) = 25kV/cm, at 25℃ for 2 hours], 2) under Tc medium-temperaturepoling treatment (Ep=20kV/cm, from 85˚C to 25˚C for 2 hour), and 3) above Tc high-temperature poling were immesed in simulated body fluid (SBF) for 30 days, and the formation of calcium phosphate (Ca-P) layer n the surface was evaluated. The crystallinity, microstructure, and ferroelectric characteristic of BTO thin film were evaluated withthe variation of final heat treatment. It was performed after establishing the starting substance-solvent mixing ratio, coating times, and pre-heating temperature optimal to form continuous and flawless BTO thin film adequate for having ferroelectricity. Perparation of BTO thin film was made by dipping-pyrolysis technique using metal naphthenates as starting substances. BTO thin films was spin-coated on Ti substrate by dipping-pyrolysis technique using sol obtained by mixing Ba-naphthenate and Ti-naphthenate as starting substances. Pre-firing temperature of BTO thin film was performed at 450℃ because organic-solvent ws completely volatilized without any crystal growth, and the final heat treatment was performed at 600, 700 or 800℃, respectively. The results are as follows; 1. BTO disk sintered at 1300℃ for 2 hours showed average grain size of about 1㎛ and the relative dielectric constant at 1㎑ was abut 3000∼3500. 2. After immersing the sintered bulk BTO poled at respective conditions in SBF for 30 days, Ca-P layers were present on the negatively charged surfaces. In contrary, positively charged Bto surface did not show any noticeable charge of the surface microstructure after SBF immersion. 3. In he case of poling condition 1 and 2 treated with below Tc, Ca/P ratio showed a relatively low value of 1,.2∼1.5. While, in the case of poling condition 3 treated with above Tc, Ca/P ratio was 1.5∼1.67, which is similar to that of biological apatite. This phenomenon demonstrates that poling the BTO above the temperature of Tc is preferable for the Ca-P formation. 4. For thin film BTO coastin, the starting substance was prepared by an equimolar mixing of the Ba and Ti-naphthenate. Dilution of the starting substance with toluene was most appropriate at sol : toluene ratio of 5.2:4.8 Too thin sol produced porosity in film, and too thick sol resulted cracks in the film. By repeating the coating and pre-firing procedure 15 times, homogeneous film of 0.5㎛ thickness could be fabricated, and perfomed well during the poling treatment without breakdown. 5. The heat-treatmen of the BTO thin film at 700℃ produced a homogeneous crystalline structure without heterogeneous TiO2 formation. The BTO thin film heat-treated at 600℃ showed non-crystallinity and no ferroelectricity. Treatment at 800℃ produced heterogeneous TiO2 phase in the film, which is unfavorabe for having ferroelectricity by the distortion of the perovskite structure. The relative dielectic constant at 1 ㎑ was 152 and 112 by heat-treatment at 700 and 800℃, respectively. In summary, these results demonstrated that poling the ferroelectric B_aT_iO_3 surface negatively is effective for the formation of Ca-P layer in simulated body fluids. Poling condition at a temperature cooling from above Tc down to room temperature is most effective. By optimizing the method of BTO thin film coating on metal substrate for the formation of Ca-P layer, the data of this study might be applied for the manufacture of new bioactive implant system.

한국형 후각검사 KVSS Test의 개발

홍석찬,유영석,김은서,김석천,박수홍,김진국,강성호 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.7

한국 근해안강망어업의 조석에 따른 주간 어황변동 추세 분석

김진영,황진수,임양재,홍승현,연인자,황학진,김지연 한국수산자원학회 2003 한국수산자원학회지 Vol.6 No.-

조류의 강세에 의존하여 조업이 이루어지는 근해안 강망어업의 어황이 조석에 따라 어떻게 변동하는지를 연구하기 위하여 1994년부터 1996년까지 주간 어획량, 조업척수, 척당어획량의 자료를 판매량이 증가하는 조금 전후와 그 반대의 현상이 나타나는 사리 등으로 구분하여 시계열분석기벅으로 장기변동추세를 분석하였다. 단계별 구분에 따른 어획량에 대한 분석결과, 3단계 구분에서 전체적으로 모형의 적합도가 가장 높게 나타났다. 3단계로 구분한 경우의 어획량은 조금에 (1-0.6891B+2.1168B²)(1-B)Z₁=(1-0.9730B)a_(?) 사리에 Z_(t)=(1+0.41659B)a_(t₁) 중간물에 (1+1.38253B+0.63391B²)Z₁-(1+1.15390B+0.64547B²)Z₁-(1+1.15390B+0.64547B²)a_(t)로 표현되었으며, 조업척수는 조금에 (1-0.19699B)Z₁=(1-0.66259B)a_(t?) 사리에 (1+0.45672B)Z₁=1+0.006094B)a_(t?) 중간물에(1.0.74814B) Z₁=((1-0.21476b)a_(t)로 표현되었다. 척당어획량은 조금에 (1-0.54709B+0.26967B^(6))Z_(t)=a_(t₁) 사리에 (1-0.26622B-0.28067B^(6))(1+0.45081B^(8))Z_(t)=(I+0.21652B^(15))a 중간물에 (1-0.23881B-0.10487B^(5))Z_(t)=a_(t)로 나타낼 수 있었다. Z_(t)는 시간 t에서의 어획량, 조업척수, 척당 어획량을 나타낸다. B는 후향연산자 로서 ㅇ?P를 들면 B^(d)를 Z_(t)에 작용시키면 Z_(t-d)이 된다. A seasonal Autoregressive Integrated Moving Average (ARIMA) time series model was applied to the weekly prediction of landings. number of operating boats and catches per unit effort of large stow net fisheries as ebb and flow in Korean wafers for 1994-1996. The estimated seasonal ARIMA models are presented as the fellowing equations:(1-0.6891B+2.1168B²)(1-B)Z₁=(1-(0.9730B)a₁ at the neap tides. Z₁=(1+0.41659B)a₁ at the spring tides, and (1+1.38253B+0.63391B²) Z₁=(1+1.15390B+0.64547B²)a₁ at the middle tides between the neap tide and the spring tide fer landings.(1-0.19699B) Z₁=(1-0.662593)a₁ at the neap tides. (1+0.45672B) Z₁=(1+D.0.006094B)a₁ at the spring tides, and (1-0.74814B) Z₁=(1-0.214766)a₁ at the middle tides between the neap tide and the spring tide for the number or operating boats, and(1-0.54709B+0.26967B)Z₁=a₁at the neap tides, (1-0.26622B-0.28067B^(6))(1+0.45081B^(8)) Z₁=(1+0.21652B^(15))a₁ at the spring tides, and (1-0.23881B-0.10487B^(5)) Z₁=a₁t the middle tides between the neap tide and the spring tide for the catch per unit efforts, where: :Z_(t)=the value at week t: B^(D)=a backward shift operator that is used as follows: B^(D)Z_(t)=-Z_(t-p); and a_(t)=error term at week t. The prediction error by the Box-Cox transformation on weekly landings, number of operating boats and CPUB of stow net in Korea were less than that by the Iogarithmic transformation.

大學校 敎職員의 健康實態에 관한 基礎的 調査硏究

양점홍,황철문,남태호,백영호,윤양진,황영성 부산대학교 사범대학 1993 교사교육연구 Vol.26 No.-

The purpose of this study was to analyze the staffs' health of P. University through survey research. Also, the staffs's health problem was analyzed by the regular health test's result and their lifestyle. The results were as following: 1. The analysis of lifestyle (1) A habit of smoking 1. It was presented the male smokers(55.9%) and females smokers(0.6%) of P. university staffs were found in this study. 2. It was presented the male smokers smoked average 18.2 pieces a day. Also, they began to smoke cigarette 21.5 years old. 3. The persistent smokers were 24.6% and 52.2% of smokers be going to quit smoking cigarette someday in the future. (2) A habit of drinking 1. It was presented 85.7% of males and 59.1% of females subject drinking normally. 2. It was presented 3.7% of male subjects were drinking alcohol almost everyday in a week. 3. The most frequent kind of alcohol is as following order a beer(males 67.6% & females 79.6%) and a soju(males 28.3% & females 4.3%). Males drunken average amount of beer was 2 bottles(640ml) and females drunken average amount of beer was 0.8 bottles in a week. (3) A habit of exercise 1. It was presented males (29.0%) and females (15.1%) were exercising regularly, but males (23.3%) and females (38.6%) of staffs were not exercise at all. 2. It was found males' regular kind of exercise was as following order mountain-climbing, tennis, and jogging and females' regular kind of exercise was as order swimming, free handing exercise, and mountain-climbing. 3. It was presented 25.1% of staffs exercised 6 times a week regularly. And each times of exercise, 37.3% of staffs spent less than 30 minutes. 4. It was presented staffs exercised for health (72.4%) and 48.4% of staffs could not exercise as following reasons of not enough times, home work, research.... 5. Male staffs prefer as following order kind of sport tennis, swimming, and golf and female staffs prefer as following order kind of sport swimming, tennis, and bowling in the future. (4) A habit of eating 1. It was presented 5.5% of males and 16.6% of females did not have a breakfast regularly. 2. Concerning balance of food content: do not concerning food (males 34.7% & females 23.8%) and subjects like vegetables 9males 25.7% & females 32.7%) were found. 3. It was presented 8.5% of males and 5.4% of females took the vitamin regularly. (5) Health condition 1. In present evaluation for subject's health condition, very healthy (males 7.5% & females 6.0%) and poor health (males 2.0% & females 1.8%) were found in this study. 2. In present evaluation criterion for subject's health condition, the ability of adaptation on fatigue was appeared the most (males 35.9% & females 40.7%). 3. It was presented subjects have a digestive trouble (males 23.5% & females 33.1%) which were the best health problem in subjects. 2. A analysis of result of regular health test (1) Physique test 1. It was presented height (males 169.5cm & females 158.6cm) and body weight (males 65.9kg & females 53.1kg) were found in this study. 2. According to this study, obesity (males 11.2% & females 5.6%) and low body weight (males 8.8% & females 14.8%) were found in this study. 3. A high blood pressure subject (males 8.7% & females 2.5%) over than a contraction blood pressure 140mmHg and A high blood pressure subject (males 8.5% & females 1.9%) over than a expansion blood pressure 90mmHg were found in this study. (2) A blood test 1. Normal hemoglobin of subject (males 99.8% & females 62.3%) and 37.7% of females less than normal hemoglobin were found in this study. 2. 5.3% of males and 2.5% of females have greater than a concentration of glucose 140mg/dl, but there was anyone less than a concentration of glucose 50mg/dl. 3. The greater than 251mg/dl staff''s T.C.(males 7.1% & females 4.9%) and the less than 130mg/dl staffs' T.C.(males 2.0% & females 3.7%) were found in this study. 4. It was found males 5.3%, 11.6% & females 1.9%, 4.3% were presented greater than GOT and GPT 341U/L. (3) Hepatitis, Urinary Sugar, and Urinary Protein test 1. According to this study result, positive hepatitis was presented males (6.5%) and female(4.3%). 2. Urinary sugar is greater than +- males (1.8%) and females (2.4%) were found in this study. 3. Urinary protein is greater than +- males (1.6%) and females (1.8%) were found in this study. (4) Chest X-ray test 1. It was found male (1.6%) suffered from tuberculosis of the lungs. (5) Dental test 1. It was presented 77.3% of males and 88.9% of females was not existed the upper caries. Also, 75.7% of males and 90.7% of females was not existed the bottom caries. 2. It was presented 96.8% of males and 99.4% of females had the non-deficit of teeth in the upper part of teeth. Also, 93.9% of males and 98.1% of females had the non-deficit of teeth in the bottom part of teeth. 3. It was presented 19% of males and 3.7% of females have the periodontal disease. (6) General report and judgment 1. In general report, it was found 75.3% of males and 91.4% of females were the normal health condition. It was presented 9.1% of males and 4.9% of females were the liver disease, 4.9% of males and 1.2% of females were the sugar diabetes, 4.9% of males and 0.6% of females were the high blood pressure, and 1.4% of males and 1.9% of females were high arrest of bleeding. 2. In general judgment, it was presented 75.5% of males and 91.4% of females were the normal health condition. However, it was presented 17.8% of males and 7.4% of females were required high observation, 6.7% of males and 1.2% of females were required simple observation. As presented P. University staffs' lifestyle, it was found still many staffs have not right living habit. It is necessary to be wellness of lifestyle and satisfaction of life through correction of self responsibility and management in their life. Therefore, it is possible to live with healthy in better quality of life which is high quality of life and new concept of health were offered. Also, researcher expected the regular health examination be more practical contents than informal contents. Researcher recommended that it is necessary to support the university administration to be more flexibility of the regular health examination day than set the certain day of regular health examination and it required to create a way of using the P. university hospital.

김치 관련 연구문헌의 분류분석 및 김치연구의 동향 (Ⅲ)

최홍식,김재이,민병태,전정태,공연희,홍정진,김나영 부산대학교 김치연구소 2002 김치의 과학과 기술 Vol.8 No.-

About 200 research papers and patents on kimchi(Korean fermented vegetable food) published In the years of 1997-2001 were collected and analyzed for the classification and review. This article covers the classified topics on the natures and kinds of raw materials, fermentation and related microorganisms, processing / preservation, kimchi packaging, biochemical changes, enzymes, quality, food chemistry, functional klmchi, general consideration on kimchi, and also some research nerds In the future.

中山間地(標高 250m)에서 참깨 播種適期와 晩播限界期에 關한 硏究

孫錫龍,崔仁植,趙鎭泰,權圭七,金仁培,李濟弘 충북대학교 농업과학기술연구소 1986 農業科學硏究 Vol.4 No.-

In order to determinate the optimum plating time and its limitation, an eary harvest and high yeld sesame varety-Poong Nyun Ggae-was cultivated on the semi-mountainous area of 250 meter above sea level. The variety was cultivated with a single and double cropping system. The single cropping plots were covered with transparent polyethylene film on 1st , 11th and 21th in May and the double cropping plots were covered with PE film on 5th, 15th, 25th in June respectively and on 5th July. The results obtained are as follows; Yield of the plot planted on 1st May was 59kg/10a. In compaorisn with this, yields were increased 16% and 25% in plots planted on 11th and 21th May, respectively. The optimum planting time was considered near 20th May for the single cropping system and it should be considered before 15th June for the double cropping system in the semimountainous area.

제대혈 분리방법의 차이에 따른 단핵구 및 조혈모세포의 수득 효과에 관한 비교연구

박정숙,이영호,최안홍,노신애,김태겸,한진영 대한조혈모세포이식학회 1998 대한조혈모세포이식학회지 Vol.3 No.1

연구배경 : 최근에 보고된 변형적 Ficoll-Hypaque 방법을 이용한 제대혈 분리방법이 지금까지의 고식적 Ficoll-Hypaque 분리방법에 비하여 조혈모세포의 수득효과면에서 얼마나 차이가 있는지 또한 비교적 수득효과가 크다고 알려져 있는 3% gelatin을 이용한 분리방법에 비하여 얼마나 효과적인지를 알아보고, 제대혈 분리방법의 차이에 따라 단핵구와 조혈모세포 사이에 어떤 상관관계가 있는지 알아보기 위하여 본 연구를 시행하였다. 방법: 21명의 건강한 산모로부터 정상 질식 및 제왕절개 분만 후 제대정맥에서 해파린 처리한 주사기를 사용하여 제대혈을 채취하였다 채취한 제대혈은 동일하게 3개월 시험관에 나누어 실온에서 24시간 이내에 고식적 Ficoll-Hypaque분리법, modified Ficoll-Hypaque 분리법, 3% gelatin 분리법을 이용하여 각각 단핵구 분리를 시도하였으며 이들의 단핵구수 및 생존률, CD34 양성세포수, 집락수를 측정 비교 하였다. 또 상관분석을 이용하여 단핵구수, CD34양성세포수와 CFU-GM집락수 사이의 상관관계를 알아보았다. 결과: 1) 세포 생존률은 고식적 Ficoll-Hypaque 분리법, 변형적 Ficoll-Hypaque 분리법, 3% gelatin 분리법 사이레 통계적 차이가 없었다. 2) 단핵구수는 3% gelatin으로 분리했을 때가 4.56±1.86 (×10^(6)/mL)로 수득효과가 가장 높았으며 (P=0.0001), Ficoll-Hypaque으로 분리했을때는 각각 1.54±0.06(×10^(6)/mL), 1.36±0.67(×10^(6)/mL)로서 고식적 방법과 변형적 방법 차이에 통계적 차이가 없었다. 3) CD34 양성세포수는 3%gelatin으로 분리했을 때가 6.08±3.99(×10⁴/mL)로 수득효과가 가장 높았으며 (P=0.0001), Ficoll-Hypaque으로 분리했을 때는 각각 2.18±2.17(×10⁴/mL), 2.24±1.63(×10⁴mL)로서 고식적 방법과 변형적 방법사이에 통계적 차이가 없었다. 4) CFU-GM 집락수는 3% gelatin으로 분리했을 때가 15.72±8.93(×10³/mL)로 수득효과가 가장 높았으며 (P=0.0002), Ficoll-Hypaque으로 분리했을 때는 각각 3.12±1.45(×10³mL), 2.35±0.82(×10³/mL)로서 고식적 방법과 변형적 방법 사이에 통계적 차이가 없었다, 5) 제대혈 고식적 Ficoll-Hypaque 방법으로 분리하였던 경우는 단핵구수와 CFU-GM집락수 사이에 상관관계가 없었으며CD34 양성세포수만 CFU-GM집락수와 상관관계가 있었다. (r=0.57). 또 변형적 Ficoll-Hypaque 방법에 의하여 분리하였던 경우는 단핵구수나 CD34 양성세포수 모두가 CFU-GM 집락수와 상관관계가 없었다. 그러나 제대혈을 3% gelatin법으로 분리하였던 경우는 CFU-GM집락수 가 단핵구수 (r=0.88) 및 CD34양성세포수(r=0.86)양자 모두와 상관관계가 있었다. 결론 : 3%gelatin을 이용하여 제대혈을 분리하는 것이 단핵구 및 조세모세포의 수득효과면에서 가장 효과적이었다. 한편 변형적 Ficoll-Hypaque 분리법이 고식적 Ficoll-Hypaque 분리법보다 시간과 경비면에서 비효율적이면서 수득효과도 높지 못하였다. 또 제대혈 분리법의 차이에 따라 단핵구나 CD34 양성세포와 VFU-GM사이에 상관관계에 차이가 있었으며, 실제로 제대혈이식 후에 생착 여부를 예측할 수 있는 인자가 제대혈 분리법의 차이에 따라 달라지는지에 관해서 보다 많은 임상적 연구가 필요할 것으로 사료된다. Background : Cord blood banking for stem cell transplantation requires volume reduction and red cell depletion for cost effective storage. To determine which technique could minimize the loss of progenitor cells during cord blood processing, we compared the efficacy of cord blood separating methods which were conventional Ficoll-Hypaque method, modified Ficoll-Hypaque method, and 3% gelatin method. Methods : Twenty-one cord blood samples were obtained with heparinized syringes from the umbilical vein following delivery. Three aliquots of each 20mL cord blood were stored at room temperature and processed by 3 different techniques within 24 hours after collection. We compared mononuclear cells(MNCs) counts and their viability, CD34+ cells counts, and CFU-GMs counts and also observed their correlations among three techniques. Results : 1) The yield of MNCs or CD34+ cells was highest in the cord blood processed with 3% gelatin method than conventional or modified Ficoll-Hypaque method(P=0.0001). 2) There were no significant difference in the yield of MNCs and CD34+ cells between conventional and modified Ficoll-Hypaque method. 3) Both MNCs counts (r=0.800) and CD34+ cells counts (r=0.86) were significantly correlated with CFU-GM counts in the cord blood processed with 3% gelatin method. 4) CD34+ cells counts were significantly correlated with CFU-GM counts in the cord blood processed with conventional Ficoll-Hypaque method (r=0.57), but MNC counts were not. 5) Both MNC counts and CD34+ cell counts were not correlated with CFU-GM counts in the cord blood processed with modified Ficoll-Hypaque method. Conclusion : Cord blood separation with 3% gelatin method could provide better yield of progenitor cells than with FICOLL_Hypaque methods. And between two Ficoll-Hypaque methods, modified method is more laborsome but not better in terms of clonogenic potential than conventional method.

n-CdS_(0.46)Se_(0.54)/p-Cu_92-x)S_(0.46)Se_(0.54) 이종접합 태양전지의 제작과 그 특성에 관한 연구

유상하,최승평,이상열,홍광준,서상석,김혜숙,전승룡,윤은희,문종대,신영진,정태수,신현길,김택성,유기수 全北大學校 基礎科學硏究所 1994 基礎科學 Vol.16 No.-

승화방법에 의해 CdS_0.46Se_0.54 단결정을 성장하여 결정구조를 조사하고, Van der Pauw 방법으로 Hall effect를 측정하여 carrier density의 온도 의존성과 mobility의 온도 의존성을 조사하였다. 성장된 CdS_0.46Se_0.54 단결정을 치환반응하여 n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 이종접합 태양전지를 제작하였다. Spectral response, 전류-전압특성 및 전력변환 효율을 조사하여 그 결과로부터 개방전압은 0.48V, 단락 전류 밀도는 21mA/㎠, fill factor와 전력변환효율은 각각 0.75와 9.5%를 얻었다. CdS_0.46Se_0.54 single crystal was grown by a sublimation method. The crystal structure and the temperature dependence of carrier density and mobility of CdS_0.46Se_0.54 single crystal were studied. Heterojunction solar cells on n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 were fabricated by the substitution reaction. The spectral response, the J-U characteristics and the conversion efficiency of the n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 heterojunction solar cells were studied. The open-cricuit voltage, short-circuit density, fill factor and conversion efficiency of n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 heterojunction solar cells under 80mW/㎠ illumination were found to be 0.48V, 21mA/㎠, 0.75 and 9.5%, respectively.