• 제목/요약/키워드: Photovoltaic cells

검색결과 797건 처리시간 0.028초

슁글드 모듈 제작을 위한 고효율 실리콘 태양전지의 레이저 스크라이빙에 의한 영향 (Effect of Laser Scribing in High Efficiency Crystal Photovoltaic Cells to Produce Shingled Photovoltaic Module)

  • 이성은;박지수;오원제;이재형
    • 한국전기전자재료학회논문지
    • /
    • 제33권4호
    • /
    • pp.291-296
    • /
    • 2020
  • The high power of a shingled photovoltaic module can be attributed to its low cell-to-module loss. The production of high power modules in limited area requires high efficiency solar cells. Shingled photovoltaic modules can be made by divided solar cells, which can be produced by the laser scribing process. After dividing the 21% PERC cell using laser scribing, the efficiency decreased by approximately 0.35%. However, there was no change in the efficiency of the solar cell having relatively lower efficiency, because the laser scribing process induce higher heat damages in solar cells with high efficiency. To prove this phenomena, the J0 (leakage current density) of each cell was analyzed. It was found that the J0 of 21% PERC increased about 17 times between full and divided solar cell. However, the J0 of 20.2% PERC increased only about 2.5 times between full and divided solar cell.

습식텍스쳐를 이용한 삼결정 실리콘 광학적.전기적 특성 연구 (A study on the Optical and electrical characteristics of Tri-silicon using wet texture)

  • 한규민;유진수;유권종;이희덕;최성진;권준영;김기호;이준신
    • 한국신재생에너지학회:학술대회논문집
    • /
    • 한국신재생에너지학회 2009년도 춘계학술대회 논문집
    • /
    • pp.180-182
    • /
    • 2009
  • Two different wet etching solutions, NaOH 40% and Acid, were used for etching in tri-crystalline Silicon(Tri-Si) solar cell fabrication. The wafers etched in NaOH40% solution showed higher reflectance compared to the wafers etched in Acid solution after $SiN_x$ deposition. In light current-voltage results, the cells etched in Acid solution exhibited higher short circuit current and open circuit voltage than those of the cells etched in NaOH 40% solution. We have obtained 16.70% conversion efficiency in large area($156cm^2$) Tri-Si solar cells etched in Acid solution.

  • PDF

VHF-PECVD를 이용한 다결정 실리콘 박막 증착 및 태양전지 제조 (Poly-Si Thin Film and Solar Cells by VHF-PECVD)

  • 이정철;정연식;김석기;윤경훈;송진수;박이준;권성원;임광수
    • 한국전기전자재료학회:학술대회논문집
    • /
    • 한국전기전자재료학회 2003년도 하계학술대회 논문집 Vol.4 No.2
    • /
    • pp.995-998
    • /
    • 2003
  • This paper presents the deposition of poly-Si thin-film and fabrication of a solar cell by VHF-PECVD method. The poly-Si thin films. and pin-type solar cells are fabricated using multi-chamber cluster tool system. A 7.4% conversion efficiency was achieved from poly-Si thin film solar cells with total thickness less than $5{\mu}m$. The physical characteristic was measured by Raman spectroscopy, solar cell characteristic was measured under AM1.5 illumination.

  • PDF

60MHz PECVD법에 의한 ${\mu}c$-Si:H 박막의 저온증착 및 태양전지 응용 (Microcrystalline Silicon Thin-film(${\mu}c$-Si:H) and Solar Cells prepared at Low Temperature by 60MHz PECVD)

  • 이정철;정연식;김석기;윤경훈;송진수;박이준;권성원;임광수
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2003년도 하계학술대회 논문집 C
    • /
    • pp.1595-1597
    • /
    • 2003
  • This paper presents the deposition of ${\mu}c$-Si:H thin-film and fabrication of a solar cell by VHF-PECVD method. The ${\mu}c$-Si:H thin films and pin-type solar cells are fabricated using multi-chamber cluster tool system. A 7.4% conversion efficiency was achieved from ${\mu}c$-Si:H thin film solar cells with total thickness less than $5{\mu}m$. The physical characteristic was measured by Raman spectroscopy, Solar cell characteristic was measured under AM1.5 illumination.

  • PDF

자외선 조사량에 따른 태양전지 모듈 봉지재의 특성 분석 (Characterization of Photovoltaic Module Encapsulant According to UV Irradiation Dose)

  • 이송은;배준학;신재원;전찬욱
    • Current Photovoltaic Research
    • /
    • 제6권3호
    • /
    • pp.81-85
    • /
    • 2018
  • The photovoltaic modules installed in the actual field are affected by various external environments and the electrical performance output value is generally lowered compared to initial output value. The most of photovoltaic modules consists of low iron glass, encapsulant (EVA), back sheet, frame and junction box assembly based on the solar cells. In this paper, the characteristics of encapsulant which is an important constituent material of photovoltaic module were verified by maximum power determination, electro luminescence images, yellowness index measurement, and gel content measurement after ultraviolet (UV) irradiation exposure. The most commonly installed 72 cells crystalline photovoltaic modules were tested after various UV exposure of 0, 15, 30, and $60kWh/m^2$ and compared with the reference module. After UV exposure of $15kWh/m^2$, which is the current international test condition, a small amount of change was observed in yellowness index and electroluminescence, while a gell content rapidly increased. At a cumulative dose of $60kWh/m^2$, which will be a new international test condition in the near future, however, the yellowness index increased sharply and showed the greatest output power drop.

이중 나노 계면층을 적용한 고효율 고분자 태양 전지 소자 연구 (Nanoscale Double Interfacial Layers for Improved Photovoltaic Effect of Polymer Solar Cells)

  • 이영인;박병주
    • 한국전기전자재료학회논문지
    • /
    • 제24권1호
    • /
    • pp.70-75
    • /
    • 2011
  • We introduced nanoscale interfacial layers between the PV layer and the cathode in poly (3-hexylthiophene):methanofullerene bulk-heterojunction polymer photovoltaic (PV) cells. The nanoscale double interfacial layers were made of ultrathin poly (oxyethylenetridecylether) surfactant and low-work-function alloy-metal of Al:Li layers. It was found that the nanoscale interfacial layers increase the photovoltaic performance, i.e., increasing short-circuit current density and fill factor with improved device stability. For PV cells with the nanoscale double interfacial layers, an increase in power conversion efficiency of $4.18{\pm}0.24%$ was achieved, compared to that of the control devices ($3.89{\pm}0.08%$) without the double interfacial layers.

The Fabrication and Characterization of the Photovoltaic Cells Composed of Polydiacetylene and Fullerene

  • Song Jeong-Ho;Kang Tae-Jo;Cho Young-Don;Lee Sun-Hyoung;Kim Jeong-Soo
    • Fibers and Polymers
    • /
    • 제7권3호
    • /
    • pp.217-222
    • /
    • 2006
  • Propargyl alcohol was coupled to 2,4-hexadiyne-1,6-diol (HDD) and crystallized in the process of ultraviolet irradiation-induced topochemical polymerization. The HDD polymer crystals were used as one component in the fabrication of organic photovoltaic cells, in combination with fullerene as the electron acceptor. The various structures of the produced photovoltaic cells included bilayer, trilayer, and bulk heterojunction structures. Their photovoltaic properties were analyzed in relation to crystal structure, electrochemical properties, and band structure of the HOD polydiacetylene polymers.

SnBiAg 전도성 페이스트를 이용한 Shingled 결정질 태양광 모듈의 전기적 특성 분석 (Electrical Characteristics of c-Si Shingled Photovoltaic Module Using Conductive Paste based on SnBiAg)

  • 윤희상;송형준;강민구;조현수;고석환;주영철;장효식;강기환
    • 한국재료학회지
    • /
    • 제28권9호
    • /
    • pp.528-533
    • /
    • 2018
  • In recent years, solar cells based on crystalline silicon(c-Si) have accounted for much of the photovoltaic industry. The recent studies have focused on fabricating c-Si solar modules with low cost and improved efficiency. Among many suggested methods, a photovoltaic module with a shingled structure that is connected to a small cut cell in series is a recent strong candidate for low-cost, high efficiency energy harvesting systems. The shingled structure increases the efficiency compared to the module with 6 inch full cells by minimizing optical and electrical losses. In this study, we propoese a new Conductive Paste (CP) to interconnect cells in a shingled module and compare it with the Electrical Conductive Adhesives (ECA) in the conventional module. Since the CP consists of a compound of tin and bismuth, the module is more economical than the module with ECA, which contains silver. Moreover, the melting point of CP is below $150^{\circ}C$, so the cells can be integrated with decreased thermal-mechanical stress. The output of the shingled PV module connected by CP is the same as that of the module with ECA. In addition, electroluminescence (EL) analysis indicates that the introduction of CP does not provoke additional cracks. Furthermore, the CP soldering connects cells without increasing ohmic losses. Thus, this study confirms that interconnection with CP can integrate cells with reduced cost in shingled c-Si PV modules.

Advances in High Efficiency Back Contact Back Junction Solar Cells

  • Balaji, Nagarajan;Park, Cheolmin;Raja, Jayapal;Yi, Junsin
    • Current Photovoltaic Research
    • /
    • 제3권2호
    • /
    • pp.45-49
    • /
    • 2015
  • In the past few decade's researchers, scientists, engineers of photovoltaic (PV) industry are working towards low cost high efficiency Si solar cells. Over the last decade the interest in back contact solar cell has been acquiring as well as a gradual introduction to industrial applications is increasing. As an alternative to conventional solar cells with a front and rear contact, the back-contact cells has remained a research topic. The aim of this work is to present a comprehensive summary of results incurred in the back contact back junction solar cells such as interdigitated back-contact (IBC), emitter wrap-through (EWT) and metallization wrap-through (MWT) over the years.

무독성 양자점 감응형 태양전지 연구동향 (Research Trends in Heavy-Metal-Free Quantum Dot Sensitized Solar Cells)

  • 김재엽;고민재
    • Current Photovoltaic Research
    • /
    • 제3권4호
    • /
    • pp.126-129
    • /
    • 2015
  • Over the last two decades, quantum dot (QD) solar cells have attracted much attention due to the unique properties of QDs, including band gap tunability, slow hot electron cooling, and multiple exiton generation effect. However, most of the QDs employed in photovoltaic devices contain toxic heavy-metals such as cadmium or lead, which may limit the commercial application. Therefore, recently, heavy-metal-free QDs such as Cu-In-S or Cu-In-Se have been developed for application in solar cells. Here, we review the research trends in heavy-metal-free QD solar cells, mainly focusing on Cu-In-Se QD-sensitized solar cells (QDSC).