Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/77487
Title: Photovoltaic performance of vapor-assisted solution-processed layer polymorph of Cs3Sb2I9
Authors: Singh, A
Boopathi, KM
Mohapatra, A
Chen, YF
Li, G 
Chu, CW
Keywords: All-inorganic
Antimony based
Lead-free
Perovskite solar cells
Solution processed
Issue Date: 2018
Publisher: American Chemical Society
Source: ACS applied materials and interfaces, 2018, v. 10, no. 3, p. 2566-2573 How to cite?
Journal: ACS applied materials and interfaces 
Abstract: The presence of toxic lead (Pb) remains a major obstruction to the commercial application of perovskite solar cells. Although antimony (Sb)-based perovskite-like structures A3M2X9 can display potentially useful photovoltaic behavior, solution-processed Sb-based perovskite-like structures usually favor the dimer phase, which has poor photovoltaic properties. In this study, we prepared a layered polymorph of Cs3Sb2I9 through solution-processing and studied its photovoltaic properties. The exciton binding energy and exciton lifetime of the layer-form Cs3Sb2I9 were approximately 100 meV and 6 ns, respectively. The photovoltaic properties of the layered polymorph were superior to those of the dimer polymorph. A solar cell incorporating the layer-form Cs3Sb2I9 exhibited an open-circuit voltage of 0.72 V and a power conversion efficiency of 1.5% - the highest reported for an all-inorganic Sb-based perovskite.
URI: http://hdl.handle.net/10397/77487
ISSN: 1944-8244
EISSN: 1944-8252
DOI: 10.1021/acsami.7b16349
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