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Kim, Jin Young
Next Generation Energy Laboratory
Research Interests
  • Polymer solar cells, QD solar cells, organic-inorganic hybrid solar cells, perovskite solar cells, OLEDs, PeLEDs, organic FETs

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Cesium-doped methylammonium lead iodide perovskite light absorber for hybrid solar cells

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Title
Cesium-doped methylammonium lead iodide perovskite light absorber for hybrid solar cells
Author
Choi, HyosungJeong, JaekiKim, Hak-BeomKim, SeongbeomWalker, BrightKim, Gi-HwanKim, Jin Young
Keywords
Cesium doping; Hybrid solar cells; Methylammonium lead iodide perovskite; Planar heterojunction
Issue Date
201407
Publisher
Elsevier BV
Citation
NANO ENERGY, v.7, no., pp.80 - 85
Abstract
We demonstrate cesium-doping in methylammonium lead iodide perovskites (CsxMA1-xPbI3) light absorbers to improve the performance of inverted-type perovskite/fullerene planar heterojunction hybrid solar cells. CsxMA1-xPbI3 perovskite devices with an optimized 10% Cs doping concentration exhibit remarkable improvement in device efficiency from 5.51% to 7.68% due to increases in short-circuit current density and open-circuit voltage via increased light absorption at optimum device thickness, improved film morphology and a widening of the energy difference between the valence band of the perovskite and lowest unoccupied molecular orbital level of PCBM.
URI
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DOI
http://dx.doi.org/10.1016/j.nanoen.2014.04.017
ISSN
2211-2855
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