측면입사광에 대한 SiOx 무반사 회절격자 결합 c-Si PV 서브-모듈의 광전변환효율 향상

심지현,김제하,Shim, Ji-Hyun,Kim, Jeha 한국전기전자재료학회 2017 전기전자재료학회논문지 Vol.30 No.5

We fabricated 1-D and 2-D diffraction gratings of SiOx anti-reflection (AR) film grown on a quartz substrate and integrated them into a c-Si photovoltaic (PV) submodule. The light-trapping effect of the resulting submodules was studied in terms of the oblique optical incident angle, ${\theta}_i$. As the ${\theta}_i$ increased, solar conversion efficiency, ${\eta}$, was improved as expected by the increased optical transmission caused by the grating. For ${\theta}_i{\leq}30^{\circ}$, the relative solar conversion efficiency, ${\Delta}{\eta}$, of a 1-D SiOx (t=300 nm) grating, compared to that of a flat SiOx AR-coated integrated PV submodule, was improved very little, with a small variation of within 2%, but increased markedly for ${\theta}_i{\geq}40^{\circ}$. We observed a change of ${\Delta}{\eta}$ as large as 10.7% and 9.5% for the SiOx grating of period t=800 nm and 1200 nm, respectively. For a 2-D SiOx (t=300 nm) grating integrated PV submodule, however, the optical trapping behavior was similar in terms of ${\theta}_i$ but its variation was small, within ${\pm}1.0%$.

황화급속열처리를 이용한 SnS 박막성장 및 온도의존성 연구

심지현,김제하,Shim, Ji-Hyun,Kim, Jeha 한국전기전자재료학회 2016 전기전자재료학회논문지 Vol.29 No.2

We fabricated a tin sulfide (SnS) layer with Sn/Mo/glass layers followed by a RTP (rapid thermal processing), and studied the film growth and structural characteristics as a function of annealing temperature and time. The elemental sulfur (S) was cracked thermally and applied to form SnS polycrystalline film out of the Sn percursor at pre-determined pressures in the RTP tube. The sulfurization was done at the temperature from $200^{\circ}C$ to $500^{\circ}C$ for a time period of 10 to 40 min. At ${\leq}300^{\circ}C$, 20 min., p-type SnS thin films was grown and showed the best composition of at.% of [S]/[Sn] $${\sim_=}$$ 1 and [111] preferred orientation as investigated from using XRD (X-ray diffraction) analysis and EDS (energy dispersive spectroscopy) and SEM (scanning electron microscopy), and optical absorption by a UV-VIS spectrometer. In this paper, we report the details of growth characteristics of single phase SnS thin film as a function of annealing temperature and time associated with the pressure and ambient gas in the RTP tube.

국내 여자 프로골퍼들을 위한 골프웨어 스타일링 연구 -골프웨어의 컬러, 소재, 디자인 개발 중심으로-

심지현 ( Ji Hyun Shim ),김혜경 ( Hye Kyung Kim ) 한국패션디자인학회 2012 한국패션디자인학회지 Vol.12 No.1

현대의 골프는 스포츠 분야에 있어서 가장 두드러진 변화를 보이는 예로서 여타의 스포츠와는 다른 발전양상을 나타내어 왔다. 2010년 한 해에만 한국 선수가 거둔 LPGA 대회 8승은 전 세계에 한국을 여자골프의 신흥강국으로 각인시키며 국내 골프시장을 더욱 성장시키는 계기가 되었고, 이에 골프웨어 시장 또한 전문화되고 확대되어 브랜드별 경쟁이 치열해졌다. 이러한 시장 변화에 따라 기업들은 타 브랜드와 차별화의 일환으로 프로골프 선수들에게 스폰서 계약을 체결하는 마케팅 전략을 도입하게 된다. 그러나 국내기업들의 상품홍보에 중점을 둔 스폰서 마케팅으로 인하여, 선수들은 패션성과 독창성이 배제된 스타일링을 연출하게 되었다. 이로 인해 브랜드 홍보에만 치중한 과도한 브랜드 로고의 노출은 오히려 보는 이로하여금 거부감을 갖게 하는 역효과를 초래하였다. 본 연구는 전 세계에 우리나라를 알리는 홍보효과를 갖는 국내여자 프로골퍼들을 위하여 다양한 골프웨어의 디자인을 검토, 개발하여 그린(green)위 새로운 스타일링의 방향제시를 목적으로 한다. 국내 골프웨어 시장분석은 2010년 국내·외 대회에서 우승한 경력이 있는 6명의 대표선수들의 스폰서 브랜드를 토대로 2011년 S/S시즌 제품을 현장조사를 통해 연구하였다. 그결과 트래디셔널(traditional), 스타일리쉬(stylish), 액티브 스포츠(active sports) 라는 세 가지 컨셉의 국내골프웨어 시장의 트렌드를 도출 해 낼 수 있었다. 기존의 골프웨어에서 볼 수 없었던 컬러, 소재 디자인을 제시한 작품으로 제안된 골프웨어 스타일링은 국내여자 프로골퍼들에게 뛰어난 골프실력과 더불어 스타일리쉬한 면모도 갖추게 되는 계기가 될 것으로 예상되며, 이를 통해 날로 높아져가는 골퍼들의 위상을 국제대회에서 더욱 돋보이게 하는 것에 본 연구의 의의가 있다. Modern golf is a sport that has especially gone through many changes over the years, and has developed in a different way from other sports. The eighth victory of Korean players at the LPGA (Ladies Professional Golf Association) tour in 2010 showed the world the potential of Korean women`s golf and triggered further development of the Korean domestic golf apparel market. The golf apparel industry has become very specialized and expanded and the competition among brands has become more intense. Due to this market change, companies have utilized sponsorship for professional golf players as a marketing strategy to differentiate themselves from others. However sponsorship which only focuses on promoting their products has only resulted in hindering fashionable and creative styling of golf players on the green. Excessive exposure of the sponsor`s brand logo rather causes a feeling of repulsion in people who see the players` outfits. The aim of this study is to propose a new styling direction that makes up for disadvantages of sports sponsorship, which is a fast growing area of sports marketing, and improve the image of both golf players and their sponsor brands by developing and researching various designs and styling methods of golf apparel for female professional golfers based on functionality. An empirical method was used to collect data through field survey and to analyze the style of brands which offered sponsorship to six professional female golfers, selected among those who won the championship or ranked high in the LPGA in 2010. The results of this study showed that traditional, stylish and active styles may help Korean female golfers not only enhance their golf performance but also play their game in style on the green. Thus this study presents implications on how to make Korean female golfers more stylish and reinforce their prestige on the international stage.

모듈식 해양생산영어 교재 개발 연구

심지현(Ji-Hyun SHIM),나현미(Hyun-Mi RHA),이유원(Yoo-Won LEE) 한국수산해양교육학회 2013 水産海洋敎育硏究 Vol.25 No.6

프랜차이즈 가맹점주의 노동시간 증감요인: 가맹본부의 신뢰성, 가맹점 방문 직원의 자유방임 리더십, 가맹점주간의 교환관계

곽원준 ( Won Jun Kwak ),이진복 ( Jin Bok Lee ),심지현 ( Ji Hyun Shim ) 한국생산성학회 2014 生産性論集 Vol.28 No.2

As there has been a growing interest and concern on a subject of employee leisure time in a Korean Society, an employee`s labor hour, which is closely associated with employee leisure time, has been known to enhance the employee`s perceived quality and satisfaction of his or her work and general life. This study investigated the direct and interactive effects of various organizational determinants on employee labor hour in the context of franchise industry. Specifically, drawing on the multi-foci social exchange theory which suggests that an individual could form varied quality of exchange relationships with different parties, we examined how a franchiser`s trustworthiness, laissez-faire leadership of a supervising employee visiting from a franchiser to a franchisee, the quality of a franchisee`s exchange relationship with other franchisees would directly and interactively affect a franchisee owner`s labor hour. For the present research, we surveyed 195 franchisee owners in restaurant, retailing, and service industries and conducted hierarchical regression analyses. As expected, a franchisee owner was found to work less when he or she perceived higher trustworthiness from a franchiser. In contrast, a franchisee owner was found to work more when a supervising employee more demonstrated laissez-faire leadership. Especially, as a franchisee owner develop a higher-quality exchange relationship with other franchisee owners, i.e., co-franchisee exchange increased, the extent to which a supervising employee`s laissez-faire leadership increased a franchisee owner`s labor hour was found to be more intensified. Considering the positive outcomes that result from an employee`s reduced labor hour for the quality and satisfaction of his or her work and life experience, the result of this study suggests that a franchiser would need to help a franchisee owner perceive trustworthiness from his or her franchiser. In addition, it was also suggested that a franchiser would need to train and develop his or her employee to gain appropriate styles of leadership which are required to effectively supervise a franchisee owner. A Franchiser`s these efforts would be especially necessary when franchisee owners develop good exchange relationships with each other.

EVA, POE 봉지재에 따른 PV모듈 옥외 성능 평가 및 열화 특성 비교

김제하,심지현 청주대학교 산업과학연구소 2015 産業科學硏究 Vol.32 No.2

Under outdoor environments, we studied the performance of solar modules that were fabricated with both EVA and POE encapsulants and went through a series of reliability testing such as PID(potential induced damage), DH (damp heat), TC, and complex testing. The modules of 4 kW(16 panels in total) were installed on the roof of the engineering building at the Cheongju University and their performances had been recorded for 10 months beginning from March, 2014. We investigated the effect of output power and I-V characteristics related with the conditions of outdoor environment as a function of encapsulants and reliability testing methods. In this paper, we present the results of the module performances in terms of total accumulated power and the change in output I-V characteristics that related with outdoor condition, module testing, as well as encapsulant materials.