UM
Aligned and Graded Type-II Ruddlesden–Popper Perovskite Films for Efficient Solar Cells
Qing J.6; Liu X.-K.7; Li M.1; Liu F.5; Yuan Z.7; Tiukalova E.1; Yan Z.7; Duchamp M.1; Chen S.1; Wang Y.7; Bai S.7; Liu J.-M.2; Snaith H.J.4; Lee C.-S.6; Sum T.C.1; Gao F.7
2018-07-25
Source PublicationAdvanced Energy Materials
ISSN16146840 16146832
Volume8Issue:21
AbstractRecently, Ruddlesden–Popper perovskites (RPPs) have attracted increasing interests due to their promising stability. However, the efficiency of solar cells based on RPPs is much lower than that based on 3D perovskites, mainly attributed to their poor charge transport. Herein, a simple yet universal method for controlling the quality of RPP films by a synergistic effect of two additives in the precursor solution is presented. RPP films achieved by this method show (a) high quality with uniform morphology, enhanced crystallinity, and reduced density of sub-bandgap states, (b) vertically oriented perovskite frameworks that facilitate efficient charge transport, and (c) type-II band alignment that favors self-driven charge separation. Consequently, a hysteresis-free RPP solar cell with a power conversion efficiency exceeding 12%, which is much higher than that of the control device (1.5%), is achieved. The findings will spur new developments in the fabrication of high-quality, aligned, and graded RPP films essential for realizing efficient and stable perovskite solar cells.
Keyword2D additives charge separation layered perovskite solar cells
DOI10.1002/aenm.201800185
URLView the original
Language英語
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Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Nanyang Technological University
2.Nanjing University
3.A-Star, Institute of Materials Research and Engineering
4.University of Oxford
5.Shanghai Jiao Tong University
6.City University of Hong Kong
7.Linköpings universitet
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GB/T 7714
Qing J.,Liu X.-K.,Li M.,et al. Aligned and Graded Type-II Ruddlesden–Popper Perovskite Films for Efficient Solar Cells[J]. Advanced Energy Materials,2018,8(21).
APA Qing J..,Liu X.-K..,Li M..,Liu F..,Yuan Z..,...&Gao F..(2018).Aligned and Graded Type-II Ruddlesden–Popper Perovskite Films for Efficient Solar Cells.Advanced Energy Materials,8(21).
MLA Qing J.,et al."Aligned and Graded Type-II Ruddlesden–Popper Perovskite Films for Efficient Solar Cells".Advanced Energy Materials 8.21(2018).
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