Dopant-free 3, 3′-bithiophene derivatives as hole transport materials for perovskite solar cells. Issue 10 (17th February 2016)

• Record Type: Journal Article
• Authors: Gong, Genfei; Zhao, Ning; Ni, Debin; Chen, Jianyou; Shen, Yan; Wang, Mingkui; Tu, Guoli
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 10(2016)
• Page Start: 3661
• Page End: 3666
• Publication Date: 2016-02-17
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6ta00032k
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : We report three hole transport materials featuring "X" swivel-cruciform structures for stable perovskite solar cells. Abstract : Three 3, 3′-bithiophene derivatives (DHPT-SC, DOPT-SC and DEPT-SC) have been efficiently synthesized by a Stille reaction. X-ray diffraction analysis revealed unique swivel-cruciform configurations and weak intermolecular π–π stacking in these materials. Perovskite solar cells using these pristine hole transport materials without dopants have achieved power conversion efficiencies of 8.35%, 8.69%, and 9.73% with good air stability. This present finding develops dopant-free hole transport materials for perovskite solar cells.