The influence of ionic radius of interfacial molecule on device performances of polymer solar cells. (August 2018)

• Record Type: Journal Article
• Authors: Jian, Hongmei; Li, Jiangsheng; Zhao, Min; Zhang, Hongna; He, Ling; Tao, Guohong; Jiu, Tonggang
• Is Part Of: Solar energy. Volume 170(2018)
• Page Start: 906
• Page End: 912
• Publication Date: 2018-08
• Subjects: Ionic radius -- Regularity -- Electron transfer layer -- Polymer solar cells; Solar energy -- Periodicals; Solar engines -- Periodicals; 621.47
• DOI: 10.1016/j.solener.2018.06.029
• Languages: English
• ISSNs: 0038-092X

Abstract

Graphical abstract: Highlights: Various stearate salts as electron transfer layer were used to systematically study the effects of different ionic radius on device performances. The key device parameters present regular change with the ionic radius increasing. Two systems of active layers were used to demonstrate the universality of regularity. Abstract: Ionic radius of interfacial molecular can affect the interface property and key electron transfer processes occurring at interface in polymer solar cells. To study the effects of different ionic radius of electron transfer layer on device performances, we introduce various stearate salts (Na +, K + and Cs + ) as electron transfer layer to fabricate polymer solar cells. Interestingly, it is found that the key device parameters such as V oc, J sc, fill factor and PCE of polymer solar cells present regular change with the ionic radius increasing. We systematically study the effects of different ionic radius of electron transfer layer on the various parameters of polymer solar cells and believe this regularity paves a way for further understanding and improving the performances of polymer solar cells.