Large grain growth for hole-conductor-free fully printable perovskite solar cells via polyoxometalate molecular doping. Issue 14 (3rd February 2017)

• Record Type: Journal Article
• Authors: Zhang, Yuzhuo; Wang, Yanju; Sun, Zhixia; Li, Fengyan; Tao, Ran; Jin, Zhanbin; Xu, Lin
• Is Part Of: Chemical communications. Volume 53:Issue 14(2017)
• Page Start: 2290
• Page End: 2293
• Publication Date: 2017-02-03
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c6cc08516d
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Polyoxometalate-induced Ostwald ripening process occurring during the crystal grain growth of perovskite film, achieving a grain size of 30 μm. Abstract : A large-grained perovskite film, with a crystal grain size of ca. 30–50 μm, was achieved by polyoxometalate-induced Ostwald ripening. Aiming at commercially-oriented fully printable hole-conductor-free perovskite solar cells, the power conversion efficiency of the device was significantly improved from 9.17% to 11.35% (average) via polyoxometalate molecular doping. This is because the large-grained perovskite film could effectively reduce bulk defects and charge recombination, thereby facilitating charge transport.