title: Hysteretic Behavior upon Light Soaking in Perovskite Solar Cells Prepared via Modified Vapor-Assisted Solution Process.
abstract: Recently, 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.
authors: College of Physics Science and Technology, Hebei University, Baoding, 071002, China.
authors: Chong
authors: C
authors: Liu
authors: College of Physics Science and Technology, Hebei University, Baoding, 071002, China.
authors: Jiandong
authors: J
authors: Fan
authors: College of Physics Science and Technology, Hebei University, Baoding, 071002, China.
authors: Xing
authors: X
authors: Zhang
authors: College of Physics Science and Technology, Hebei University, Baoding, 071002, China.
authors: Yanjiao
authors: Y
authors: Shen
authors: College of Physics Science and Technology, Hebei University, Baoding, 071002, China.
authors: Lin
authors: L
authors: Yang
authors: College of Physics Science and Technology, Hebei University, Baoding, 071002, China.
authors: Yaohua
authors: Y
authors: Mai
keywords: hysteresis; light soaking; perovskite solar cells; polarization; vapor-assisted solution process