Multidimensional Modulation via Tailored Covalent Organic Frameworks Enables Stable Inverted Perovskite Solar Cells with 26.21% Efficiency DOI

Tianzhou Yin,

Zimin Zhang,

Hualin Wu

et al.

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

Published: May 15, 2025

Abstract Despite the remarkable advancements in inverted perovskite solar cells, their commercialization remains hindered by critical bottlenecks efficiency and stability stemming from inadequate crystallization unfavorable interfacial states. Herein, for first time, a judiciously designed hydrazine‐linked covalent organic framework (COF) with long alkane phosphate branch chains, named 12‐SD‐COF, is synthesized integrated into precursor to achieve multidimensional regulation of crystallization, defect states, charge separation synergistically. It found that 12‐SD‐COF featuring periodic pores, large planar structure, abundant binding groups extruded solution onto buried interface, surface, grain boundaries, facilitating oriented while eliminating defects perovskites, thereby yielding high‐quality crystals suppressed non‐radiative recombination. Simultaneously, synergistically facilitated p‐type doping‐optimized energy level alignment induced intramolecular electric field, ultimately achieving an exceptional power conversion (PCE) 26.21%, highest yet reported COF‐modified. Impressively, non‐encapsulated resultant device delivers greatly improved stabilities, maintaining over 92% initial PCE after being aged under 85 °C continuous heating stress 800 h, 1000 h 50±3% relative humidity air, 1200 1‐sun illumination, respectively.

Language: Английский

MA-Free Lead–Tin Perovskites for All-Perovskite Tandem Solar Cells: Challenges, Strategies, and Perspectives DOI
Siyi Wang, Woo-Yeon Kim, Lei Tao

et al.

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110926 - 110926

Published: March 1, 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
Solar‐to‐Hydrogen Conversion Efficiency for Photovoltaic Water Electrolysis to Produce Green Hydrogen DOI
Chun Tang, Yonglin Chen,

Jiahao Rao

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 13, 2025

Abstract Hydrogen is widely regarded as a key energy source for the 21st century, offering sustainability, environmental benefits, and storage capacity. Solar‐powered water splitting frontier technology green hydrogen production, circumventing reliance on fossil fuels. Advances in solar cells electrocatalysis have significantly improved production via photovoltaic‐electrolysis (PV‐EC). However, solar‐to‐hydrogen (STH) conversion efficiency still limited by factors such cell performance, electrolysis efficiency, system integration. Optimizing these elements essential enhancing overall efficiency. This review focuses critical technologies influencing STH PV‐EC systems. Specifically, of photovoltaic devices harnessing energy, catalytic performance electrocatalytic materials efficient splitting, integration with electrolyzer systems to optimize conversion. Furthermore, latest developments ongoing challenges research are explored, evaluating their economic feasibility perspective future advancements electrolysis.

Language: Английский

Citations

0
Multidimensional Modulation via Tailored Covalent Organic Frameworks Enables Stable Inverted Perovskite Solar Cells with 26.21% Efficiency DOI

Tianzhou Yin,

Zimin Zhang,

Hualin Wu

et al.

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

Published: May 15, 2025

Abstract Despite the remarkable advancements in inverted perovskite solar cells, their commercialization remains hindered by critical bottlenecks efficiency and stability stemming from inadequate crystallization unfavorable interfacial states. Herein, for first time, a judiciously designed hydrazine‐linked covalent organic framework (COF) with long alkane phosphate branch chains, named 12‐SD‐COF, is synthesized integrated into precursor to achieve multidimensional regulation of crystallization, defect states, charge separation synergistically. It found that 12‐SD‐COF featuring periodic pores, large planar structure, abundant binding groups extruded solution onto buried interface, surface, grain boundaries, facilitating oriented while eliminating defects perovskites, thereby yielding high‐quality crystals suppressed non‐radiative recombination. Simultaneously, synergistically facilitated p‐type doping‐optimized energy level alignment induced intramolecular electric field, ultimately achieving an exceptional power conversion (PCE) 26.21%, highest yet reported COF‐modified. Impressively, non‐encapsulated resultant device delivers greatly improved stabilities, maintaining over 92% initial PCE after being aged under 85 °C continuous heating stress 800 h, 1000 h 50±3% relative humidity air, 1200 1‐sun illumination, respectively.

Language: Английский

Citations

0