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A‐Site Rubidium Cation‐Incorporated CsPbI 2 Br All‐Inorganic Perovskite Solar Cells Exceeding 17% Efficiency by Patil, Jyoti V.; Mali, Sawanta S.; Hong, Chang Kook is a Engineering article available to read on EtoBox.

What is A‐Site Rubidium Cation‐Incorporated CsPbI 2 Br All‐Inorganic Perovskite Solar Cells Exceeding 17% Efficiency about?

Due to its excellent thermal stability and high performance, the inorganic cesium lead mixed-halide (ABX 3 , where A=Cs, B=Pb and X= I/Br)all inorganic perovskite solar cells (IPVSCs) attracted much interest in the optoelectronic applications. However, the film quality, enough absorption by desired film thickness and nature of partial replacement of cations determine the stability of the CsPbI 2 Br perovskite films. Here, we employed a hot air method to control the thickness and morphology of the CsPbI 2 Br perovskite thin film and the A-site (herein, Cs + ) cation is partially incorporated by rubidium (Rb + ) cation for making stable black-phase in ambient condition. The Rb-cation incorporated Cs 1-x Rb x PbI 2 Br (x=0 to 0.03) perovskite thin films exhibited high crystallinity, uniform grains, extremely dense and pinhole free morphology. The fabricated device having Cs 0.99 Rb 0.01 PbI 2 Br perovskite composition with poly(3-hexylthiophene-2,5-diyl) (P3HT) as a hole transporting layer (HTL) exhibited 17.16 % power conversion efficiency (PCE), which is much higher than the CsPbI 2 Br based IPVSCs. The fabricated Cs 0.99 Rb 0.01 PbI 2 Br based IPVSC

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Author

Patil, Jyoti V.; Mali, Sawanta S.; Hong, Chang Kook

Publisher

Wiley (John Wiley & Sons); Wiley (ISSN 2367-198X)

Published

2020

Language

EN

Field

Engineering (Physical Sciences)