Special Section on Hybrid Organic-Inorganic Solar Cells

One-step, low-temperature deposited perovskite solar cell utilizing small molecule additive

[+] Author Affiliations
Chun-Chao Chen, Zirou Hong, Gang Li

University of California, Department of Materials Science and Engineering, 420 Westwood Plaza Drive, Los Angeles, California 90095, United States

Qi Chen, Huanping Zhou, Yang Yang

University of California, Department of Materials Science and Engineering, 420 Westwood Plaza Drive, Los Angeles, California 90095, United States

University of California Los Angeles, California Nano Systems Institute, Los Angeles, California 90095, United States

J. Photon. Energy. 5(1), 057405 (Jan 16, 2015). doi:10.1117/1.JPE.5.057405
History: Received October 22, 2014; Accepted December 17, 2014
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Abstract.  In the current study, the perovskite absorber (CH3NH3PbI3) is processed via one-step deposition employing the small molecule additive, BmPyPhB, which can be dissolved in dimethylformamide along with precursors. Here, 1,3-Bis[3,5-di(pyridin-3-yl)phenyl]benzene (BmPyPhB) functions as the morphology controller to introduce an intermediate phase during perovskite film growth, which allows well-defined and precrystallized domains formed before the annealing treatment. Furthermore, a chloroform solvent wash procedure is applied afterward to remove BmPyPhB from perovskite without damaging the predetermined morphology. Thus, postannealing as low as 100°C for 5 min can achieve the optimal power conversion efficiency of 8% in a planar-structured inverted solar cell.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Chun-Chao Chen ; Zirou Hong ; Gang Li ; Qi Chen ; Huanping Zhou, et al.
"One-step, low-temperature deposited perovskite solar cell utilizing small molecule additive", J. Photon. Energy. 5(1), 057405 (Jan 16, 2015). ; http://dx.doi.org/10.1117/1.JPE.5.057405


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