Suppressing Interface Defects in Perovskite Solar Cells via Introducing a Plant-Derived Ergothioneine Self-Assembled Monolayer DOI Open Access
Cheng-Hsien Yeh,

Hung‐Chieh Hsu,

Jung-Che Tsao

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(23), P. 5739 - 5739

Published: Nov. 23, 2024

Perovskite solar cells are among the most promising renewable energy devices, and enhancing their stability is crucial for commercialization. This research presents use of L-Ergothioneine (L-EGT) as a passivation material in perovskite cells, strategically placed between electron transport layer absorber to mitigate defect states at heterojunction interface. Surface analysis reveals that introducing L-EGT significantly improves quality film. X-ray diffraction indicates slows down film degradation successfully suppresses secondary phase formation. photoelectron spectroscopic shows oxygen vacancies lattice decrease from 29.21% 15.81%, while Ti

Language: Английский

Scalable fabrication of wide-bandgap perovskites using green solvents for tandem solar cells DOI
Chenyang Duan, Han Gao, Ke Xiao

et al.

Nature Energy, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 15, 2024

Language: Английский

Citations

14
Morphological engineering for high‐performance perovskite field‐effect transistors DOI Creative Commons
Shuanglong Wang, Hong Lian,

Yongge Yang

et al.

FlexMat., Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Abstract The emergence of perovskite semiconductors for field‐effect transistor (FET) applications has received significant research attention due to their excellent electronic properties. rapid development FETs over the last few years been driven by advances in understanding thin‐film morphologies layers and intriguing correlations with charge carrier transport, device performance, stability. Here we summarize progress morphological engineering aimed at improving electrical parameters FETs. We first discuss mechanisms crystal nucleation growth solution‐processed polycrystalline thin films, along characteristics, including grain boundaries, defects, ionic transport then elaborate on impacts these microstructures performance FET devices. Representative optimization strategies are also presented, showcasing how fundamental understandings have translated into state‐of‐the‐art Finally, provide a perspective remaining challenges future directions optimizing morphologies, toward an in‐depth relationships between film morphology, property next transistor.

Language: Английский

Citations

1
Peptide-Engineered Interface to Improve the Efficiency of Pure Red Tin Halide Perovskite LEDs by Controlling Crystallization and Reducing Oxidation DOI
Zhixian Wu, Xuan Zheng, Chunli Jiang

et al.

ACS Applied Electronic Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 14, 2025

Tin (Sn)-based perovskite light-emitting diodes (PeLEDs) have garnered significant attention owing to their superior optoelectronic properties, affordable solution processing, and environmental friendliness. However, the properties of Sn-PeLEDs trail those lead (Pb) counterparts. The main obstacle is easy oxidation Sn2+ Sn4+ as well fast crystallization, leading poor film quality with many defects. Herein, a convenient effective interface engineering strategy reported fabricate (2-thiopheneethylamine)2SnI4 (TEA2SnI4) PeLEDs by introducing different peptides into PEDOT:PSS hole-transport layer (HTL). Benefiting from interaction between peptide molecules Sn-perovskite nuclei, crystallization dynamics are effectively adjusted, an improved morphology. At same time, multiple functional groups can suppress passivate Therefore, films luminescence efficiency obtained. further used for fabrication pure red enhanced performance. In particular, optimized devices based on Leu-Gly-Gly (LGG) achieve peak external quantum 0.5% brightness 136 cd m–2, which about 2 3 times larger, respectively, than reference device. This research offers general improve performance via engineering.

Language: Английский

Citations

0
Tailored Crystallization Dynamics for Efficient and Stable DMSO‐Free Tin Perovskite Solar Cells DOI Creative Commons
Shengnan Zuo, Alexander Tarasov, Lennart Frohloff

et al.

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

Published: May 23, 2025

Abstract Tin perovskite solar cells are emerging as a sustainable lead‐free alternative in thin film photovoltaics. DMSO‐free processed tin perovskites gaining interest due to the detrimental effects of DMSO on oxidation. However, replacing with other solvents remains challenging accelerated crystallization dynamics non‐DMSO systems. In this study, process solvent system is regulated by managing transition from sol‐gel phase solid film. Specifically, piperazine dihydriodide (PDAI) and 4‐ tert ‐butylpyridine (tBP) utilized coordinately tune colloidal chemistry through forming large pre‐nucleation clusters ink, further, facilitating formation process. By combining tBP PDAI, controllable rate achieved evidenced situ photoluminescence (PL) measurement during spin‐coating. As result, films show high crystallinity improved microstructure. Devices treated tBP+PDAI exhibit champion power conversion efficiency 7.8% excellent stability without observable degradation for over 3000 h stored N 2 glovebox. These findings advance understanding cells.

Language: Английский

Citations

0
Manipulating Electron‐Phonon Coupling for Efficient Tin Halide Perovskite Blue LEDs DOI
Ying Han, Zhenyu Guo, S.C. Liu

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 6, 2024

Abstract Low‐dimensional perovskites have opened up a new frontier in light‐emitting diodes (LED) due to their excellent properties. However, concerns regarding the potential toxicity of Pb limited commercial development. Sn‐based are regarded as promising candidate replace Pb‐based counterparts, while they generally exhibit strong electron–phonon coupling and consequently blue emission quenching at room temperature (RT), thus perovskite LED devices not yet been reported. Herein, luminescence properties regulated by assembling rigid organic skeleton within structure, protonated 4‐bromobenzylamine (BrPMA + = C 7 H 9 BrN ) is employed A site cation synthesize 100‐oriented 2D (BrPMA) 2 SnBr 4 , which exhibits lattice rigidity via intermolecular interaction weak coupling, achieving PL RT. The high quality thin films obtained further inhibiting oxidation promoting crystallization. Finally, successfully fabricated for first time 467 nm with champion EQE 1.3% maximum brightness 800 cd m −2 . This work gives insights into mechanism provides theoretical basis development lead‐free LEDs.

Language: Английский

Citations

1
Suppressing Interface Defects in Perovskite Solar Cells via Introducing a Plant-Derived Ergothioneine Self-Assembled Monolayer DOI Open Access
Cheng-Hsien Yeh,

Hung‐Chieh Hsu,

Jung-Che Tsao

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(23), P. 5739 - 5739

Published: Nov. 23, 2024

Perovskite solar cells are among the most promising renewable energy devices, and enhancing their stability is crucial for commercialization. This research presents use of L-Ergothioneine (L-EGT) as a passivation material in perovskite cells, strategically placed between electron transport layer absorber to mitigate defect states at heterojunction interface. Surface analysis reveals that introducing L-EGT significantly improves quality film. X-ray diffraction indicates slows down film degradation successfully suppresses secondary phase formation. photoelectron spectroscopic shows oxygen vacancies lattice decrease from 29.21% 15.81%, while Ti

Language: Английский

Citations

0