Date
Place
- Room H (Room Hall 1, 1F)
- P2. Poster Session II
- August 21, 2015 (Friday)
- 14:00 ~ 15:30
- [P2-150]
- 14:00 ~ 15:30
- Title:Photovoltaic Performance of CZTSe Based Solar Cells Grown by Two-Step Process
- Min-Su Kwon, Gedi Sreedevi, and Chan-Wook Jeon (Yeungnam Univ., Korea)
Abstract: The cell showed characteristic parameters such as, an open circuit voltage (Voc) of 0.409 V, short circuit current density (Jsc) of 29.94 mA cm-2, a fill factor (FF) of 37.13, giving a conversion efficiency of 4.56 % [2]. In addition, a series resistance (Rs) of 1.22 §Ù-cm and a shunt resistance (Rsh) of 1976 §Ù-cm were also evaluated. The external quantum efficiency (EQE) of CZTSe cell was measured as a function of wavelength of the incident light and is shown in Fig. 1(b). The QE curve showed an average efficiency of ~ 80 % and in the long wavelength region, the spectrum is restricted to the value of ~ 1200 nm corresponding to the absorption edge of CZTSe film. A band gap of 1.03 eV [3] for CZTSe film was calculated from the inset graph of Fig. 1(b). Hence the results suggested that two-stage approach for the fabrication of CZTSe can be adaptable for the low-cost high-efficiency solar cells.
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