Highly Efficient Organic Solar Cells with Improved Vertical Donor–Acceptor Compositional Gradient Via an Inverted Off‐Center Spinning Method. Issue 5 (2nd December 2015)

• Record Type: Journal Article
• Authors: Huang, Jiang; Carpenter, Joshua H.; Li, Chang‐Zhi; Yu, Jun‐Sheng; Ade, Harald; Jen, Alex K.‐Y.
• Is Part Of: Advanced materials. Volume 28:Issue 5(2016)
• Page Start: 967
• Page End: 974
• Publication Date: 2015-12-02
• Subjects: bulk heterojunctions -- off‐center spin -- organic solar cells -- power conversion efficiency; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201504014
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract : A novel, yet simple solution fabrication technique to address the trade‐off between photocurrent and fill factor in thick bulk heterojunction organic solar cells is described. The inverted off‐center spinning technique promotes a vertical gradient of the donor–acceptor phase‐separated morphology, enabling devices with near 100% internal quantum efficiency and a high power conversion efficiency of 10.95%.