Sequential deposition method fabricating carbonbased fully-inorganic perovskite solar cells

Abstract

Hybrid organic-inorganic halide perovskite material has been considered as a potential candidate for various optoelectronic applications. However, their high sensitivity to the environment hampers the actual application. Hence the technology replacing the organic part of the hybrid solar cells needs to be developed. Herein, we fabricated fullyinorganic carbon-based perovskite CsPbBr 3 solar cells via a sequential deposition method with a power conversion efficiency of 2.53% and long-time stability over 20 d under ambient air conditions without any encapsulation. An evolution process from tetragonal CsPb 2 Br 5 to CsPb 2 Br 5 -CsPbBr 3 composites to quasi-cubic CsPbBr 3 was found, which was investigated by scanning electron microscopy, X-ray diffraction spectra, UV-vis absorption spectra and Fourier transform infrared spectroscopy. Detailed evolution process was studied to learn more information about the formation process before 10 min. Our results are helpful to the development of inorganic perovskite solar cells and the CsPb 2 Br 5 based optoelectronic devices.

Two-dimensional organic-inorganic hybrid perovskite: from material properties to device applications

“…8b) [65,[73][74][75] and the sequential spin-coating [76,77]. However, this approach is not suitable for planar heterojunction structures because of the slow and incomplete reaction.…”

Sequential Processing: Crystallization of Ultrasmooth FA1–xMAxPbI3 Perovskite Layers for Highly Efficient and Stable Planar Solar Cells

“…Among the various lead halide perovskite materials, methylammonium lead iodide (MAPbI 3 ) and formamidinium lead iodide (FAPbI 3 ) are widely used as light harverters in PSCs because of their suitable band gap . MAPbI 3 is reported to be prone to a reversible phase transition from tetragonal to cubic at about 55 °C due to its low crystallization energy, leading to light and heat instability of PSCs .…”

Combination of solution-phase process and halide exchange for all-inorganic, highly stable CsPbBr3 perovskite nanowire photodetector

“…As a kind of more stable new perovskite materials, all-inorganic lead halide perovskites CsPbX 3 (X=I, Br, Cl) is considered to be the most suitable alternative of organic-inorganic perovskites. Recently, CsPbX 3 based optoelectronic devices have been widely reported in solar cells [10,11], light-emitting diodes (LEDs) [1, 12,13], photodetectors (PDs) [14][15][16][17][18] and other fields [19][20][21].…”