Measurement and analysis of temperature dependence for current-voltage characteristics of homogeneous emitter and selective emitter crystalline silicon solar cells

Yoon Chung Nam, Hyomin Park, Ji Eun Lee, Soo Min Kim, Young Do Kim, Sungeun Park, Yoon Mook Kang, Haeseok Lee, Donghwan Kim

Research output: Contribution to journalArticle

Abstract

Solar cells exhibit different power outputs in different climates. In this study, the temperature dependence of opencircuit voltage(V-oc), short-circuit current(I-sc), fill factor(FF) and the efficiency of screen-printed single-crystal silicon solar cells were studied. One group was fabricated with homogeneously-doped emitters and another group was fabricated with selectively-doped emitters. While varying the temperature (25, 40, 60 and 80 °C), the current-voltage characteristics of the cells were measured and the leakage currents extracted from the current-voltage curve. As the temperature increased, both the homogeneously-doped and selectively-doped emitters showed a slight increase in I-sc and a rapid degradation of V-oc. The FF and efficiency also decreased as temperature increased in both groups. The temperature coefficient for each factor was calculated. From the current-voltage curve, we found that the main cause of V-oc degradation was an increase in the intrinsic carrier concentration. The temperature coefficients of the two groups were compared, leading to the idea that structural effects could also affect the temperature dependence of current-voltage characteristics.

Original languageEnglish
Pages (from-to)375-380
Number of pages6
JournalKorean Journal of Materials Research
Volume24
Issue number7
DOIs
Publication statusPublished - 2014 Jan 1

ASJC Scopus subject areas

  • Materials Science(all)

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