National Taiwan Ocean University Institutional Repository:Item 987654321/51999
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題名: Above 10% efficiency earth-abundant Cu2ZnSn(S,Se)4 solar cells by introducing alkali metal fluoride nanolayers as electron-selective contacts
作者: Cheng-Ying Chen
Bandiyah Sri Aprillia
Wei-Chao Chen
Yen-Ching Teng
Chih-Yuan Chiu
Ruei-San Chen
Jih-Shang Hwang
Kuei-Hsien Chen
Li-ChyongChen
貢獻者: 國立臺灣海洋大學光電科學研究所
關鍵詞: CZTSSe
Kesterite
Open-circuit voltage deficit
Electron-selective contacts
Alkali metal fluoride
Solar cells
日期: 2018-06
上傳時間: 2019-01-11T01:11:56Z
出版者: Nano Energy
摘要: Abstract: The present investigation mainly addresses the open circuit voltage (Voc) issue in kesterite based Cu2ZnSn(S,Se)4 solar cells by simply introducing alkali metal fluoride nanolayers (~ several nm NaF, or LiF) to lower the work functions of the front ITO contacts without conventional hole-blocking ZnO layers. Kelvin probe measurements confirmed that the work function of the front ITO decreases from 4.82 to 3.39 and 3.65 eV for NaF and LiF, respectively, resulting in beneficial band alignment for electron collection and/or hole blocking on top electrodes. Moreover, a 10.4% power conversion efficiency (~ 11.5% in the cell effective area) CZTSSe cell with improved Voc of up to 90 mV has been attained. This demonstration may provide a new direction of further boosting the performance of copper chalcogenide based solar cells as well.
關聯: 51 pp.597-603
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51999
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