• Title/Summary/Keyword: Solar cell application

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Optical and Electrical Properties of $Ti_xSi_{1-x}O_y$ Films

  • Lim, Jung-Wook;Yun, Sun-Jin;Kim, Je-Ha
    • ETRI Journal
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    • v.31 no.6
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    • pp.675-679
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    • 2009
  • $Ti_xSi_{1-x}O_y$ (TSO) thin films are fabricated using plasma-enhanced atomic layer deposition. The Ti content in the TSO films is controlled by adjusting the sub-cycle ratio of $TiO_2$ and $SiO_2$. The refractive indices of $SiO_2$ and $TiO_2$ are 1.4 and 2.4, respectively. Hence, tailoring of the refractivity indices from 1.4 to 2.4 is feasible. The controllability of the refractive index and film thickness enables application of an antireflection coating layer to TSO films for use as a thin film solar cell. The TSO coating layer on an Si wafer dramatically reduces reflectivity compared to a bare Si wafer. In the measurement of the current-voltage characteristics, a nonlinear coefficient of 13.6 is obtained in the TSO films.

Optical Properties of Soluble Polythiophene for Flexible Solar Cell

  • Kim, Byoung-Ju;Park, Eun-Hye;Kang, Kwang-Sun
    • Current Photovoltaic Research
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    • v.6 no.4
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    • pp.91-93
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    • 2018
  • Polythiophene-$TiO_2$ composite was synthesized with different molar ratios of thiophene and titaniumisopropoxide ($Ti(OPr)_4$) for flexible solar cell application as a flexible electrode or an active material. The $Ti(OPr)_4$ was stabilized by thiophene. The thiophene was polymerized by ferric chloride catalyst. The synthesized polythiophene exhibited strong UV-visible absorption in the range of the wavelength shorter than 500 nm. Field emission scanning electron microscope (FESEM) image of low concentration of $TiO_2$ film showed smooth surface. However, FESEM image of high concentration of $TiO_2$ film exhibited relatively rough surface. Polythiophene concentration dependent strong photoluminescence quenching of surfrhodamine-B was observed.

The Application and Electrical, Optical Properties of $In_2O_3$: Sn Transparent Conducting Films (ITO투명도전막의 전기, 광학적 특성 및 그 응용)

  • Lee, Dong Hoon;Park, Ki Cheol;Park, Chang Bae;Kim, Ki Wan
    • Journal of the Korean Institute of Telematics and Electronics
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    • v.23 no.4
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    • pp.498-505
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    • 1986
  • In2O3: Sn(ITO) transparent conducting films were fabricated by the electron beam evaporation method. The dependence of their electrical and optical properties on deposition conditions were examined. The optimum evaporation conditions were such that the deposition rate was 5-10\ulcornersec, oxygen partial pressure was 4x10**_4 torr, substate temperatudre was above 300\ulcorner, and SnO2 doping rate was 10 mol%. The values of sheet resistance and transmittance of the films in visible region fabricated under these optimum conditins were 12\ulcorner/ and 87-99%, respecively. And the energy conversion efficiency of the SIS solar cell fabricated using ITO was 9.16%. It is shown that the transparent conducting films can be applied to the TV camear pick-up tube and solar cell.

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$TiO_2$ Nanocubes for Rapid Electron Transfer in Dye-Sensitized Solar Cell

  • Yang, Hye-Yeong;Bang, So-Yeon;Lee, Do-Gwon;Go, Min-Jae;Kim, Gyeong-Gon
    • Proceedings of the Korean Vacuum Society Conference
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    • 2010.02a
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    • pp.317-317
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    • 2010
  • This paper reports syntheses of $TiO_2$ nanocubes and theirs application to DSSC. We synthesized $TiO_2$ nanocubes via solvothermal method using titanium isopropoxide (TTIP) and tetramethylammoiumhydroxide (TMAH). By adding longer alkyl chain ammonium hydroxide that slowed down the growth rate of the crystal, $TiO_2$ nanocubes were obtained with average particle size in the range of 40 nm to 70 nm. By TEM investigation, each particle was found to be single crystal of anatase having six-faces of (001) and {100} crystallographic planes truncated by {101} series of planes, which are clearly distinguishable from spherical nanoparticles. Among various application, utilizing nanocubes as photo-electrode in dye-sensitized solar cell, we investigated photo-electron conversion performances in comparison with spherical shaped $TiO_2$ nanoparticles by I-V characteristics and IPCE measurements, etc.. Photocurrent-transient analysis revealed that $TiO_2$ nanocubes have a higher transient electron transfer rate by more than 10 times compared with spherical particles of similar size. Fast electron transport along the cube edges having small curvature was suggested as a plausible origin of high diffusion coefficient of electron in nanocube $TiO_2$.

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The prediction of thermal deformation of Ni alloy substrate for application of flexible solar cell (플렉서블 태양전지 기판재용 Ni 계 합금의 열변형 예측)

  • Koo, Seung-Hyun;Lee, Heung-Yeol;Yim, Tai-Hong
    • 한국신재생에너지학회:학술대회논문집
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    • 2008.05a
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    • pp.382-385
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    • 2008
  • 박막형 태양전지 분야는 저가이고 가볍다는 특징을 가지고 있으며, 휘어지는 기판재를 적용하여 플렉서블 태양전지를 제조할 수도 있다는 장점을 가지고 있다. 본 연구에서 플렉서블 태양전지에 적합한 금속기판재를 제조하는 연구를 수행하였다. 일반적으로 기판재와 cell을 구성하는 반도체 층의 열팽창 거동 차이에 의한 열변형이 태양전지의 공정안정성에 영향을 주는 것으로 알려져 있었으며, cell을 구성하는 반도체 층과 열팽창 거동이 유사한 금속기판재의 적용이 필요하다. 이러한 특성을 쉽게 제어할 수 있는 금속기판재를 얇게 제조하기에 적절한 방법은 전주법이다. 전주법을 적용하여 조성 및 두께가 다른Ni 계 합금의 열팽창 거동을 TMA 장비를 사용하여 측정하였으며, 태양전지 제조에 사용되는 고온공정시 안정성 확보를 위하여 열처리후에 금속기판재의 열팽창 거동을 측정하였다. 그리고 전산해석tool 을 활용하여 가상의 CIS 플렉서블 태양전지 제조공정을 설정하고 고온공정온도에서 상온으로 냉각시 발생되는 층간 열변형 연구를 수행하였다. 그리고 플렉서블 태양전지용 기판재로 Ni 계 합금표면에 절연체인 $SiO_2$ 증착 연구를 수행하여 Fe-52Ni 합금에서 안정적인 절연층을 얻을 수 있었다.

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The Analysis of Optical Characteristics of Glasses for PV Module Application (태양전지모듈적용 투명유리의 광특성 분석)

  • Kim, Kyung-Soo;Kang, Gi-Hwan;Yu, Gwon-Jong
    • 한국태양에너지학회:학술대회논문집
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    • 2008.04a
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    • pp.98-103
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    • 2008
  • The glass for crystalline PV module fabrication should have high thermal and mechanical resistance to environmental also have high transparency. In this paper, we analyze the optical characteristics of glasses for photovoltaic module application. The transmittance of several glasses are measured. The effects of texturing on low iron glass, glass thickness, anti-reflective glass, photocatalyst-treated glass and special glass are compared each other. Then this will give some information to select PV glass for manufacturing. The detailed analysis is described in the following paper.

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The Operating Characteristics of 3kW BIPV System (3kW BIPV시스템의 운전특성)

  • Kim J.H.;Park J.M.;Choi Y.O.;Choi S.J.;Cho G.B.;Baek H.R.
    • Proceedings of the KIPE Conference
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    • 2006.06a
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    • pp.552-554
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    • 2006
  • BIPV(Building Integrated PV) system can expect dual effects that reduce expenses for establishment of PV system by adding new function as outer covering material of building expect producing the electricity. But, there are many generation differences according to the exterior environmental facts(solar cell array, design and installation condition of interactive inverter system) Therefore, it is difficult to optimum design. Consequently in advance design system, we experiment 3kW BIPV(Building Integrated PV) generation. We concrete PV system efficient application of variable. BIPV system that is proposed in this paper, was established in Solar Energy research center of Chosun University, composed with system. This research is a basic study for application of building integrated photovoltaic system for building

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The Output Characteristics of 3kW BIPV System (3kW 건물일체형 태양광발전시스템의 출력특성)

  • Kim, Ji-Hoon;Kim, Pyouug-Ho;Lim, Yang-Su;Cho, Geum-Bae;Baek, Hyung-Lae;Oh, Geum-Gon
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 2006.05a
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    • pp.471-474
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    • 2006
  • BIPV(Building Integrated PV) system can expect dual effects that reduce expenses for establishment of PV system by adding new function as outer covering material of building expect producing the electricity. But, there are many generation differences according to the exterior environmental facts(solar cell away, design and installation condition of interactive inverter system) Therefore, it is difficult to optimum design. Consequently in advance design system, we experiment 3kW BIPV(Building Integrated PV) generation. We concrete PV system efficient application of variable. BIPV system that is proposed in this paper, was established in Solar Energy research center of Chosun University, composed with system. This research is a basic study for application of building integrated photovoltaic system for builing.

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Development Status of Solar Garments and a Survey on the Solar Clothing Construction (태양에너지 활용 의복의 개발 현황 고찰 및 의복 설계를 위한 기초 연구)

  • Jeong, Yeon-Hee
    • Fashion & Textile Research Journal
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    • v.13 no.5
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    • pp.806-814
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    • 2011
  • A solar jacket, which utilizes solar energy for generating electricity, is an example of clothing developed by the fusion of multiple technologies; such fusion of technologies can lead to further developments in the clothing industry and other industries in general. Many research institutes and garment manufacturing companies in Europe and America are developing solar garments; various solar-based products manufactured using solar cells, photovoltaic batteries, etc. are being sold at high prices. The purpose of this study was to investigate the development status of solar garments and their application for generating photovoltaic energy; the study also identified the type of design and upper body clothing preferred by Korean in their early 20s. The survey participants were 188 university students aged between 20 and 25. The design of the proposed six types of solar clothing was evaluated and rated; they were then ranked on the basis of the ratings. A survey on the management of solar garments was conducted, and ratings were assigned according to a 5-point Likert scale, with 5 indicating the strong affirmation. The survey results showed that among the six types of clothing, protective clothing (50%) and sportswear (22%) were more preferable than the others (working clothes (16%), casual clothes (3%), everyday wear(6%), and suits(1%)). Among the six proposed designs, the jumper design (22%) and jean jacket design (21%) were preferred over the others (casual jacket (19%), casual jacket I (15%), classic suit (14%), and climbing jacket (9%)). Factorial analysis of the management of solar garments revealed that the most important factors were the properties of the solar cell and time required for battery charging, and the second important factors were clothing weight and comfort.

The Output Characteristics of 3kW BIPV System (건물일체형 태양광발전시스템의 실증분석)

  • Kim, Ji-Hoon;Jie, Bian Wen;Lee, Kang-Yeon;Kim, Pyoung-Ho;Oh, Geum-Gon;Baek, Hyung-Lae
    • Proceedings of the KIEE Conference
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    • 2006.04b
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    • pp.386-389
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    • 2006
  • BIPV(Building Integrated PV) system can expect dual effects that reduce expenses for establishment of PV system by adding new function as outer covering material of building expect producing the electricity. In case of PV(photovoltaic system) there are many generation differences according to the exterior environmental facts(solar cell array, design and installation condition of interactive inverter system). In this paper, we compared constitute factors of 3kW BIPV(solar cell module, inverter), operating characteristic and total system characteristic(utilization, generation efficiency, loss fact) and found out long time operating data using a watch instrumentations. By use of long time operating result, compare a totally operating characteristics, and we proposed a next building application of BIPV. BIPV system that is proposed in this paper, was established in Solar Energy research center of Chosun University, composed with system. The objective of this paper, is to provide a efficient BIPV design method through the considerations for the integration of PV system.

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