Sweet Zwitterionic Aspartame for High‐Performance Wide‐Bandgap Perovskite Solar Cells and Tandem Devices DOI
Shulin Wang,

Yufei Shao,

Weideren Dai

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Abstract The development of high‐quality wide‐bandgap (WBG) perovskite films is essential for achieving high‐efficiency and stable tandem solar cells (TSCs). However, WBG perovskites often suffer from high trap‐state densities significant non‐radiative recombination, leading to substantial voltage losses. To address these challenges, aspartame (ASP), a food sweetener, designed serve as multifunctional additive regulate the microstructure precursor solution optimize crystallization dynamics, enabling fabrication films. resulting exhibit reduced defect density enhanced charge extraction properties. Consequently, single‐junction (PSCs) with bandgap 1.67 eV achieve power conversion efficiency (PCE) 23.20%, while perovskite/Si TSCs reach PCE 30.68%. Furthermore, ASP‐treated devices photostability operational durability, retaining 95% their initial after 1900 h in ambient conditions. This work demonstrates potential molecular engineering through zwitterionic additives optoelectronic properties stability films, paving way high‐performance TSCs.

Language: Английский

Tailored Colloidal Shapes in Precursor Solutions for Efficient Blade‐Coated Perovskite Solar Modules DOI Creative Commons
Yongrui Yang,

Jingjing Wu,

Kun Zhang

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 21, 2025

Abstract Metal halide perovskite solar cells (PSCs) have emerged as one of the most promising candidates for next‐generation photovoltaic technologies. However, films deposited by blade‐coating usually exhibit inferior film morphology compared to those fabricated spin‐coating, which hinders power conversion efficiency (PCE) and stability scalable modules (PSMs). Herein, ellipsoidal colloids are tailored in precursor solution incorporating polymer additives. Compared unregulated spherical colloids, demonstrate more oriented packing during process, is due anisotropic driven force from fluidic flow meniscus. As a result improved morphology, regulated PSCs PSMs achieve superior PCE 24.31% 21.67% (21.37% certified), respectively, aperture areas 0.09 13.94 cm 2 , 89% initial after 600 h continuous operation.

Language: Английский

Citations

2
Accelerating direct formation of α-FAPbl3 by dual-additives synergism for inverted perovskite solar cells with efficiency exceeding 26 % DOI
Min Wang, Liang Li, Jinhui Wang

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 505, P. 159056 - 159056

Published: Jan. 6, 2025

Language: Английский

Citations

0
Sweet Zwitterionic Aspartame for High‐Performance Wide‐Bandgap Perovskite Solar Cells and Tandem Devices DOI
Shulin Wang,

Yufei Shao,

Weideren Dai

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Abstract The development of high‐quality wide‐bandgap (WBG) perovskite films is essential for achieving high‐efficiency and stable tandem solar cells (TSCs). However, WBG perovskites often suffer from high trap‐state densities significant non‐radiative recombination, leading to substantial voltage losses. To address these challenges, aspartame (ASP), a food sweetener, designed serve as multifunctional additive regulate the microstructure precursor solution optimize crystallization dynamics, enabling fabrication films. resulting exhibit reduced defect density enhanced charge extraction properties. Consequently, single‐junction (PSCs) with bandgap 1.67 eV achieve power conversion efficiency (PCE) 23.20%, while perovskite/Si TSCs reach PCE 30.68%. Furthermore, ASP‐treated devices photostability operational durability, retaining 95% their initial after 1900 h in ambient conditions. This work demonstrates potential molecular engineering through zwitterionic additives optoelectronic properties stability films, paving way high‐performance TSCs.

Language: Английский

Citations

0