Bi-functional additive engineering for high-performance perovskite solar cells with reduced trap density

Abstract

The bi-functional additive of ammonium benzenesulfonate enables the fabrication of low-defect and high-performance perovskite solar cells.

A Review on Reducing Grain Boundaries and Morphological Improvement of Perovskite Solar Cells from Methodology and Material‐Based Perspectives

“…d) Photoluminescence mapping images (top row) and time‐resolved photoluminescence mapping images (bottom row) of perovskite film containing ABS or not. Reproduced with permission . Copyright 2019, The Royal Society of Chemistry.…”

“…The resulting PCE with Bpy, Tpy was 19.02%, 18.68% each, respectively, compared with 17.58% with control PSCs. Yang et al introduced ammonium benzenesulfonate (ABS) . Owing to multiple O atoms in ABS, ABS could coordinate well with PbI 2 and form PbI 2 –ABS adduct, which impedes perovskite crystallization and produces large perovskite grains, resulting in prolonged carrier lifetime (Figure d).…”

Unveiling the Effects of Hydrolysis‐Derived DMAI/DMAPbIx Intermediate Compound on the Performance of CsPbI3 Solar Cells

“…However, black phase‐based CsPbI 3 is not stable and degrades rapidly to an undesired yellow phase δ‐CsPbI 3 in air ( E g = 2.82 eV) . Many efforts have been implemented on CsPbI 3 to improve its structure stability via solution‐processed methods especially used a facile additive engineering . Though hydroiodic acid (HI) additive can improve the stability and efficiency of inorganic perovskite solar cells (PSCs), the complete mechanism is unclear …”

Polyoxometalates: Tailoring metal oxides in molecular dimension toward energy applications

“…Dye-and quantum dot-sensitized water-splitting systems are developed to produce hydrogen fuel, where the photoelectrode materials require desired light harvesting and charge transfer properties. [35][36][37][38][39][40][41][42][43][44] Similar photoelectrode setup is available in the photocatalytic system for the CO 2 reduction as well as the production of carbon-based fuels, while the optimal charge transfer phenomenon is fundamental in these devices. [45][46][47][48][49] Energy storage devices require a reservoir of charge carriers that could be displaced during the charging and discharging processes, such as lithium-ion batteries, [50][51][52][53] lithium-sulfur batteries, 54 sodium-ion batteries, 55 and supercapacitors, [56][57][58] while porous materials are requisite for hydrogen storage.…”

“…For example, dye‐sensitized solar cells employ molecular dyes for solar energy capture and metal oxides for electron extraction. Dye‐ and quantum dot‐sensitized water‐splitting systems are developed to produce hydrogen fuel, where the photoelectrode materials require desired light harvesting and charge transfer properties . Similar photoelectrode setup is available in the photocatalytic system for the CO 2 reduction as well as the production of carbon‐based fuels, while the optimal charge transfer phenomenon is fundamental in these devices …”