am5b00375_si_001.pdf (1 MB)
Hysteretic Behavior upon Light Soaking in Perovskite Solar Cells Prepared via Modified Vapor-Assisted Solution Process
journal contribution
posted on 2015-05-06, 00:00 authored by Chong Liu, Jiandong Fan, Xing Zhang, Yanjiao Shen, Lin Yang, Yaohua MaiRecently, the organic–inorganic
hybrid perovskite solar cells exhibit rapidly rising efficiencies,
while anomalous hysteresis in perovskite solar cells remains unsolvable.
Herein, a high-quality perovskite thin film is prepared by a modified
vapor-assisted solution process, which is a simple but well-controllable
method proven to be capable of producing a thin film with full surface
coverage and grain size up to micrometers. The as-fabricated perovskite
solar cell has efficiency as high as 10.2%. The hysteresis effects
of both planar and mesoscopic TiO2-based perovskite solar
cells have been comprehensively studied upon illumination. The results
demonstrate that mesoporous-based perovskite cells combined with remarkable
grain size are subject to alleviating the hysteresis effects in comparison
to the planar cells. Likewise, mesoscopic TiO2-based perovskite
cells perform independently of illumination and bias conditions prior
to the measurements, whereas the planar cells display a reversible
behavior of illumination and applied bias-dependent I–V curves.
The present study would refer strip road for the stability study of
the perovskite solar cells.