Journal
ADVANCED ENERGY MATERIALS
Volume 5, Issue 1, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201400960
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Funding
- Air Force Office of Scientific Research [FA9550-09-1-0426]
- Office of Naval Research [N00014-11-1-0300]
- Asian Office of Aerospace RD [FA2386-11-1-4072]
- Boeing-Johnson Foundation
- NSF GRFP [DGE-1256082]
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High-performance planar-heterojunction (PHJ) solar cells based on large band-gap (1.70-1.83 eV) perovskites are demonstrated. By incorporating Cl- into the MAPb(I1-YBrY)3, the crystallinity and homogeneity of the solution-processed perovskite thin films are much improved, which results in an increased charge carrier diffusion length from approximate to 160 nm to approximate to 700-800 nm. This enhancement leads to a high power conversion efficiency (PCE) of 10% in the low-temperature solution-processed PHJ devices.
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