Ali, Farman and Sharma, Abhishek and Tiwari, Jai Prakash and Chand, Suresh (2015) Extended interface layer concept for higher stability and improvement of life time in bulk heterojunction solar cells. AIP Advances, 5 (2). 027108-1-027108-5. ISSN 2158-3226

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Power conversion efficiency (PCE) of bulk heterojunction (BHJ) organic solar cells has reached above similar to 10%. These BHJ cells have potential for flexible thin films at low processing temperatures using roll to roll printing on flexible substrates. Further, the basic materials properties can be tailored through organic synthetic routes. However, the issues related to its durability should be addressed before its commercialization. Hence, a conventional solar cell of the poly (3-hexylthiophene) (P3HT) :(6, 6)-phenyl-C-61 butyric acid methyl ester (PC61BM) blend on ITO substrates was fabricated, and investigated, which shows improved life time by using a combinational Ca/Al cathode, wherein the deposition of calcium layer is extended beyond the aluminum layer. The extended deposition of calcium layer beyond aluminum prevents the edge degradation by its oxidation and hence protecting the active pixel area of the device, resulting in the improvement of life time of device from similar to 80 hours to similar to 400 hrs.

Item Type: Article
Subjects: Materials Science
Applied Physics/Condensed Matter
Nanoscience/ Nanotechnology
Depositing User: Dr. Rajpal Walke
Date Deposited: 23 Sep 2016 05:21
Last Modified: 23 Sep 2016 05:21

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