1. A large-area hole-conductor-free perovskite solar cell based on a low-temperature carbon counter electrode.
- Author
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Liu, Zhiyong, Shi, Tielin, Tang, Zirong, and Liao, Guanglan
- Subjects
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SOLAR cells , *PEROVSKITE , *ELECTRICAL conductors , *CARBON electrodes , *LOW temperatures - Abstract
We demonstrate the application of low-temperature carbon counter electrode in fabricating large-area hole-conductor-free perovskite solar cell. A mesoscopic TiO 2 film was deposited on a transparent conductive fluorine-doped tin oxide substrate by screen printing method. Then commercial conductive carbon slurry was printed to prepare the counter electrode at a temperature of 130 °C. The light absorber, CH 3 NH 3 PbI 3 , was formed instantly inside the pores of the entire TiO 2 /carbon layer upon single-step deposition of CH 3 NH 3 PbI 3 precursor. The devices were characterized with XRD, SEM, and UV–vis absorption spectroscopy. As a result, an energy conversion efficiency of 3.3% with an active area of 2.25 cm 2 was got under AM1.5G condition and there was no obvious decay during a testing period of 624 h. The carbon counter electrode has the features of low-cost and low-temperature preparation, giving it potential for application in the large-scale flexible fabrication of perovskite solar cells in the future [ABSTRACT FROM AUTHOR]
- Published
- 2017
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