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AgAl 전극 고온 소성 조건 가변에 따른 N-형 결정질 실리콘 태양전지의 접촉 특성 분석
오동현,정성윤,전민한,강지윤,심경배,박철민,김현후,이준신,Oh, Dong-Hyun,Chung, Sung-Youn,Jeon, Min-Han,Kang, Ji-Woon,Shim, Gyeong-Bae,Park, Cheol-Min,Kim, Hyun-Hoo,Yi, Jun-Sin 한국전기전자재료학회 2016 전기전자재료학회논문지 Vol.29 No.8
n-type silicon shows the better tolerance towards metal impurities with a higher minority carrier lifetime compared to p-type silicon substrate. Due to better lifetime stability as compared to p-type during illumination made the photovoltaic community to switch toward n-type wafers for high efficiency silicon solar cells. We fabricated the front electrode of the n-type solar cell with AgAl paste. The electrodes characteristics of the AgAl paste depend on the contact junction depth that is closely related to the firing temperature. Metal contact depth with p+ emitter, with optimized depth is important as it influence the resistance. In this study, we optimize the firing condition for the effective formation of the metal depth by varying the firing condition. The firing was carried out at temperatures below $670^{\circ}C$ with low contact depth and high contact resistance. It was noted that the contact resistance was reduced with the increase of firing temperature. The contact resistance of $5.99m{\Omega}cm^2$ was shown for the optimum firing temperature of $865^{\circ}C$. Over $900^{\circ}C$, contact junction is bonded to the Si through the emitter, resulting the contact resistance to shunt. we obtained photovoltaic parameter such as fill factor of 76.68%, short-circuit current of $40.2mA/cm^2$, open-circuit voltage of 620 mV and convert efficiency of 19.11%.
코로나19 팬데믹 상황에서의 감염 예방행동 의도에 관한 연구: 건강신념모델에 사회적 변인 적용을 중심으로
홍다예(Da-Ye Hong),전민아(Min-A Jeon),조창환(Chang-Hoan Cho) 한국콘텐츠학회 2021 한국콘텐츠학회논문지 Vol.21 No.5
코로나19의 대유행이 지속되며 감염병 확산 방지를 위해 개인들의 생활 속 예방 수칙 준수를 강조하는 다양한 헬스 캠페인이 실시되고 있다. 본 연구는 코로나19 확산 방지를 위해서 개인의 감염 예방행동 의도가 중요함을 인식하고 이를 건강신념 모델의 적용을 통해 알아보았다. 또한, 공동체 행동이 요구되는 상황임을 고려하여 건강신념모델에 사회적 변인을 추가한 사회적 건강신념모델을 제시하고자 한다. 온라인 설문을 통해 (N=298), 각 변인의 영향력을 검증한 결과 지각된 심각성, 지각된 취약성, 지각된 이익, 위험, 사회적 규범이 높을수록, 책임이 낮을수록 예방 행동 의도가 유의미하게 높아지는 것을 확인했다. 이 중 위험이 가장 큰 상대적 영향력을 보였고 지각된 심각성과 사회적 규범이 그 뒤를 이었다. 기존 건강신념모델과 본 연구에서 제안한 사회적 건강신념모델의 예방행동 의도 설명력을 비교한 결과 사회적 건강신념모델이 더 높은 설명력을 보이는 것으로 나타났다. The unprecedented pandemic caused by the COVID-19 has led to a massive global public health campaign to slow the spread of the virus. Thus, this study examines the importance of individual’s prevention behavior intention by adapting health belief model(HBM). In addition, we added social variables to understand the prevention behavior better considering the situation in which collective behaviors are important. The online survey results(N=298) showed that higher level of perceived severity, perceived susceptibility, perceived benefits, perceived peril, perceived social norms and lower level of perceived responsibility led to higher prevention behavior intention. Peril was the most influential factor among all the variables. In addition, perceived severity and social norms followed after that. Additional analysis also implied that socio-HBM model we proposed better explained the prevention behavior intention than traditional HBM.
나연경 ( Yeon Kyung Na ),남혜인 ( Hye In Nam ),박경원 ( Kyung Won Park ),우남현 ( Nam Hyun Woo ),윤유라 ( Yu Ra Yoon ),장미경 ( Mi Kyung Jang ),전민아 ( Min A Jeon ),조현경 ( Hyun Kyung Cho ) 한국보건정보통계학회 (구 한국보건통계학회) 2011 보건정보통계학회지 Vol.36 No.2
Objectives: The purpose of this study was to investigate how the smart phones influence on well-being behavior of university students. Methods: The data were collected from 204 university students, those answered questionnaires from August 20, 2011 to September 3, 2011. The collected data were analyzed by using SPSS 19.0 program with t-test and ANOVA. Results: The well-being behavior was classified into dependence, obsession, disorder, compulsion. The mean value of all the questions was 2.1 9(sd=l.23), compulsion (mean=2.46) was the highest among the elements, Gender significantly affected the dependence (p=0.00l) and compulsion (p0=0.0l2), Major field of study affected the dependence (p=0.004) and disorder (p=0.003), Using time showed the significant difference in dependence (p=0.006) and compulsion (p=0.005). There was not significant between major usage and well-being behavior, Conclusions: The result suggest that smart phone affects on well-being behavior in university students and it is related to gender, major field of study and using time.
朴炳卓,田民 大韓神經精神醫學會 1981 신경정신의학 Vol.20 No.1
The earliest memory has been studied by many has been studied by many psychiatrists and psychologists in terms of under standing individual psychodynamism. To compare the earliest memories of two different diagnostic groups of schizophrenia and neurosis, the authors studied the reports of the memories of 245 schizophrenics and 213 neurotics who were either outpatients or inpatients of Daegu Dongsan Presbyterian Hospital, neuropsychiatric department from March, 1980 to August, 1980. In order to investigate the differences between both sexes, each group was divided into male and female subgroups. The results could be summarized as follows; 1. Events of the earliest memory took place most frequently in the oedipal period of 3 to 4 years of age. The memories of the preoedipal events were more frequent in the schizophrenic group compared to the neurotic group. 2. Affect associated with the memory was more frequently unpleasant in both groups, but pleasant affect was more frequently reported in the neurotic group as compared to the schizophrenic group. 3. The earliest memory of being alone was more frequent in the schizophrenic group, and among the neurotic group, it was more frequent in the male than the female group. The earliest memory of being with two to four persons was more frequent in the neurotic group. The persons in the memories were more frequently identified in the neurotic group. 4. The most frequent theme of the memories was dependency, occupying more than half in both groups. Aggression was also a frequent theme. There was no statistical difference between two groups. However, schizophrenics had more regressive themes in earlier ages, while neurotics had less regressive themes in later years. 5. Among the male neurotics, the denpendency theme was more frequent in the earlier ages, while in the female neurotics, it was more frequent in the later ages. Among the schizopqrenics, the aggression theme was more frequent in the male group.