RETRACTED: Improved mixed-dimensional 3D/2D perovskite layer with formamidinium bromide salt for highly efficient and stable perovskite solar cells

Introduction of cadmium chloride additive to improve the performance and stability of perovskite solar cells

“…[1][2][3] This could be related to the high absorption coefficient, high charge transfer phenomenon, and adjustable bandgap along with high charge diffusion length, which are all important requirements. [4][5][6] The efficiency of HPSCs has substantially increased from a low of 3.8% (in 2009) 7 to a veried 25.2% (in 2021), 8 which has encouraged researchers in the HPSC's future development. Typically, according to the direction of the photocurrent, the fundamental architecture of HPSCs can be categorized into conventional (n-i-p) and inverted (p-i-n) architectures.…”

An effective Fe(ii) doping strategy for stable and highly photoluminescent CsPbBrI2 nanocrystals

“…With the increasing demand for energy conversion, [1][2][3][4] optical displays, [5][6][7][8] signal detection, 9,10 biomedical imaging, 11,12 and reaction catalysis, 13,14 perovskite (ABX 3 ) materials, in particular all inorganic perovskite nanocrystals (PNCs, A is Cs; B is Pb; X is Cl, Br or I), have attracted considerable attention due to their convenient solution processability, flexible tunability of band gaps from the violet to near-infrared, narrow full width at half maximum (FWHM) and high photoluminescence quantum yields (PLQYs). 15,16 At present, CsPbX 3 NCs with PLQYs over 90% have been achieved, and the corresponding low-threshold amplified spontaneous emissive layers and high-efficiency light emission diodes (LEDs) have been constructed.…”

Interface engineering at electron transport/perovskite layers using wetting mesoporous titanium dioxide to fabricate efficient and stable perovskite solar cells

“…2,[14][15][16][17][18] Among these procedures, the one-step deposition method represented the most common approach to fabricating efficient devices. 19 Besides, the ETL material plays an important role in collecting and transporting photogenerated electrons from perovskite and enhances the PSC performance, which is a beneficial factor in PSCs. 20,21 Presently, titanium dioxide (TiO 2 ) has been broadly used as an ETL because of its broadening band gap, long charge lifetime, and high chemical stability.…”

“…Among these procedures, the one‐step deposition method represented the most common approach to fabricating efficient devices 19 . Besides, the ETL material plays an important role in collecting and transporting photo‐generated electrons from perovskite and enhances the PSC performance, which is a beneficial factor in PSCs 20,21 .…”