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2020 Vol.40, Issue 5 Preview Page

Research Article

Determination of the Strength Characteristics of c-Si Solar Cells using Partially Processed Solar Cells

부분공정 태양전지를 이용한 결정질 태양전지의 강도 특성에 관한 연구

Su Yeol Choi1
,
Jong Rok Lim2*
최 수열1
,
임 종록2*
1Professor, Department of Computer Application Electronics, Seoil University
2Ph.D Course, Department of Electrical Engineering, KonKuk University
1서일대학교 컴퓨터전자공학과, 교수
2건국대학교 전기공학과, 박사과정
*Corresponding Author 
30 October 2020. pp. 35-45
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Abstract

Photovoltaic (PV) power system prices have been steadily dropping in recent years due to their mass production and advances in relevant technology. Crystalline silicon (c-Si wafers) account for the largest share of the price of solar cells; reducing the thickness of these wafers is an essential part of increasing the price competitiveness of PV power systems. However, reducing the thickness of c-Si wafers is challenging; typically, phenomena such as bowing and cracking are encountered. While several approaches to address the bowing phenomenon of the c-Si solar cells exist, the only method to study the crack phenomenon (related to the strength of the c-Si solar cells) is the bending test method. Moreover, studies on determining the strength properties of the solar cells have focused largely on c-Si wafers, while those on the strength properties of front and rear-side electrodes and SiNx, the other components of c-Si solar cells, are scarce. In this study, we analyzed the strength characteristics of each layer of c-Si solar cells. The strength characteristics of the sawing mark direction produced during the production of c-Si wafers were also tested. Experiments were conducted using a 4bending tester for a specially manufactured c-Si solar cell. The results indicate that the back side electrode is the main component that experienced bowing, while the front electrode was the primary component regulating the strength of the c-Si solar cell.

Keywords
c-Si solar cells
Mechanical strength
정질 태양전지(c-Si solar cells), 기계 강도(Mechanical strength), 굽힘 시험(

키워드
결정질 태양전지
기계 강도
굽힘 시험
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Information
  • Publisher :Korean Solar Energy Society
  • Publisher(Ko) :한국태양에너지학회
  • Journal Title :Journal of the Korean Solar Energy Society
  • Journal Title(Ko) :한국태양에너지학회 논문집
  • Volume : 40
  • No :5
  • Pages :35-45
  • Received Date : 2020-09-23
  • Revised Date : 2020-10-07
  • Accepted Date : 2020-10-07
  • DOI :https://doi.org/10.7836/kses.2020.40.5.035
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