One-step, solution-processed formamidinium lead trihalide (FAPbI(3-x)Cl(x)) for mesoscopic perovskite-polymer solar cells

Formamidinium (FA) lead triiodide perovskite with chlorine addition (NH2CH=NH2PbI(3-x)Clx) is employed as a light harvester in mesoscopic solar cells for the first time. It is demonstrated that a phase-pure FAPbI(3-x)Clx perovskite layer can be synthesized using a one-step solution-process at 140 °C...

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Published in:Physical chemistry chemical physics : PCCP 2014-09, Vol.16 (36), p.19206-19211
Main Authors: Lv, Siliu, Pang, Shuping, Zhou, Yuanyuan, Padture, Nitin P, Hu, Hao, Wang, Li, Zhou, Xinhong, Zhu, Huimin, Zhang, Lixue, Huang, Changshui, Cui, Guanglei
Format: Article
Language:English
Subjects:
Amidines - chemistry
Calcium Compounds - chemistry
Electric Power Supplies
Lead - chemistry
Microscopy, Electron, Scanning
Oxides - chemistry
Polymers - chemistry
Solar Energy
Solutions
Titanium - chemistry
X-Ray Diffraction
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Summary:Formamidinium (FA) lead triiodide perovskite with chlorine addition (NH2CH=NH2PbI(3-x)Clx) is employed as a light harvester in mesoscopic solar cells for the first time. It is demonstrated that a phase-pure FAPbI(3-x)Clx perovskite layer can be synthesized using a one-step solution-process at 140 °C, and the resultant solar cells deliver a maximum power conversion efficiency of 7.51%, which is the most efficient formamidinium-lead-halide perovskite mesoscopic solar cell employing a polymer hole-transporting layer. The effects of the thermal annealing temperature on the quality/morphology of the perovskite layer and the solar cells performance are discussed. The advantages offered by the one-step solution-processing method and the reduced bandgap make FAPbI(3-x)Clx perovskites an attractive choice for future hybrid photovoltaics.
ISSN:1463-9084
DOI:10.1039/c4cp02113d