An Experimental Insight into the Reasons for Deterioration of P3HT:PCBM Bulk Heterojunction Solar Cells

被引:0
|
作者
Mounika T. [1 ,2 ]
Belagali S.L. [1 ]
Singh I. [2 ]
Kumar K. [3 ]
Arun P. [2 ]
机构
[1] Environmental Chemistry Laboratory, Department of Studies in Environmental Science, University of Mysore, Karnataka, Manasagangothri, Mysore
[2] Department of Electronics, S.G.T.B. Khalsa College, University of Delhi, Delhi
[3] Department of Physics, S.G.T.B. Khalsa College, University of Delhi, Delhi
关键词
bulk hetrojunction; degradation; domain formation; photovoltaics; power conversion efficiency;
D O I
10.3103/S0003701X23600509
中图分类号
学科分类号
摘要
Abstract: In the present work, degradation mechanism in P3HT:PCBM bulk heterojunction photo-voltaic devices has been explored. For this purpose, the JV characteristics of eight P3HT:PCBM solar cell structures fabricated under identical conditions, were studied on hourly basis. Without exception, the power conversion efficiency (PCE) of the solar cells is found to fall off exponentially that saturates within six hours. The decay and rise time of the photo-current in the devices were also studied. The nature of the graphs negates the possibility of surface oxidation and generation of trap centers in the photo-active film. Thus, phase separation of P3HT and PCBM domains is expected to be the root cause of device degradation. © 2023, Allerton Press, Inc.
引用
收藏
页码:410 / 415
页数:5
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