Passivation Using Molecular Halides Increases Quantum Dot Solar Cell Performance. Issue 2 (18th November 2015)

• Record Type: Journal Article
• Authors: Lan, Xinzheng; Voznyy, Oleksandr; Kiani, Amirreza; García de Arquer, F. Pelayo; Abbas, Abdullah Saud; Kim, Gi‐Hwan; Liu, Mengxia; Yang, Zhenyu; Walters, Grant; Xu, Jixian; Yuan, Mingjian; Ning, Zhijun; Fan, Fengjia; Kanjanaboos, Pongsakorn; Kramer, Illan; Zhitomirsky, David; Lee, Philip; Perelgut, Alexander; Hoogland, Sjoerd; Sargent, Edward H.
• Is Part Of: Advanced materials. Volume 28:Issue 2(2016)
• Page Start: 299
• Page End: 304
• Publication Date: 2015-11-18
• Subjects: molecular iodine -- passivation -- PbS quantum dots -- solar cells; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201503657
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract : A solution‐based passivation scheme is developed featuring the use of molecular iodine and PbS colloidal quantum dots (CQDs). The improved passivation translates into a longer carrier diffusion length in the solid film. This allows thicker solar‐cell devices to be built while preserving efficient charge collection, leading to a certified power conversion efficiency of 9.9%, which is a new record in CQD solar cells.