Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 28, Pages 23624-23634Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b03666
Keywords
perovskite solar cell; device architecture; light harvesting; carrier separation; transient photoluminescence spectroscopy
Funding
- National High Technology Research and Development Program of China [2014AA052002]
- Science and Technology Service Network Initiative of the Chinese Academy of Sciences [KFJ-SW-STS-152]
- Shanghai Municipal Natural Science Foundation [16ZR1441000]
- Shanghai Municipal Sciences and Technology Commission [12DZ1203900]
- Shanghai High & New Technology's Industrialization Major Program [2013-2]
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A new perovskite solar cell (PSC) structure with a functionalized interface between perovskite and a hole transport material has been proposed in this report. The short circuit current density of PSC was notably enhanced with the novel architecture (with an increase of 8.7%), and a power conversion efficiency (PCE) of 16.93% was achieved. With the increased perovskite/hole conductor interface, hysteresis suppression was observed. The advantages of this structure in light-harvesting efficiency, trap density, and carrier separation rate were proved by various characterization and analysis studies. It is noteworthy that a PCE of 14.67% was achieved with poly(3-hexyl-thiophene), which to our knowledge is the highest performing PSC based on this material.
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