Highly-efficient and low-temperature perovskite solar cells by employing a Bi-hole transport layer consisting of vanadium oxide and copper phthalocyanine. Issue 48 (30th May 2018)

• Record Type: Journal Article
• Authors: Lei, Ting; Dong, Hua; Xi, Jun; Niu, Yong; Xu, Jie; Yuan, Fang; Jiao, Bo; Zhang, Wenwen; Hou, Xun; Wu, Zhaoxin
• Is Part Of: Chemical communications. Volume 54:Issue 48(2018)
• Page Start: 6177
• Page End: 6180
• Publication Date: 2018-05-30
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c8cc03672a
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : In this article, an inorganic–organic bilayer hole transport layer (B-HTL) is designed and utilized in planar perovskite solar cells. Abstract : In this article, an inorganic–organic bilayer hole transport layer (B-HTL) is designed and utilized in planar perovskite solar cells. Here the B-HTL consists of an inorganic VO x matrix and a copper phthalocyanine (CuPc) buffer layer, providing excellent resistance to moisture as well as the alignment of the interfacial energy level. Benefiting from this typical HTL, an enlarged built-in potential and charge extraction can be achieved in PSCs simultaneously. Correspondingly, a champion device with a B-HTL shows a 16.85% efficiency with negligible hysteresis, which is superior to that of a PSC based on a PEDOT:PSS HTL. Meanwhile, significantly prolonged stability of the PSC with the B-HTL can be observed, exhibiting only a 10% efficiency loss after 350 hours in ambient air. Moreover, such an entirely low-temperature (≤60 °C) fabrication process of this typical PSC exhibits its successful application in flexible devices.