A‐Site Engineering with Thiophene‐Based Ammonium for High‐Efficiency 2D/3D Tin Halide Perovskite Solar Cells DOI Creative Commons
Guitao Feng, Hok‐Leung Loi, Tianyue Wang

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 137(1)

Published: Oct. 15, 2024

Abstract Tin halide perovskites are the most promising candidate materials for lead‐free perovskite solar cells (PSCs) thanks to their low toxicity and ideal band gap energies. The introduction of 2D/3D mixed phases in tin‐based PSCs (TPSCs) has proven be effective approach improving device efficiency stability. However, a 2D phase normally shows relatively carrier mobility, which will unfavorable transfer devices. In this work, we used thiophene‐based cation 2‐(thiophen‐3‐yl)ethan‐1‐aminium (3‐TEA) as spacer form novel TPSCs, effect on performance enhancement comparison with other cations like 2‐(thiophen‐2‐yl)ethan‐1‐aminium (2‐TEA) benzene‐based 2‐phenylethan‐1‐aminium (PEA). Theoretical calculations reveal that 3‐TEA enables compact crystal packing [SnI 6 ] 4− octahedral layers, resulting lowest hole mass formation energy phase. This significantly enhances stability by facilitating more efficient within These findings indicate well‐suited high‐performance TPSCs.

Language: Английский

Advances and Challenges in Molecular Engineering of 2D/3D Perovskite Heterostructures DOI Creative Commons
Ke Ma, Jiaonan Sun, Letian Dou

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Advances in the understanding and applications of perovskite 2D/3D heterostructures were overviewed with a focus on ligand design principles.

Language: Английский

Citations

3
Ultrafast Quasi‐2D/3D Perovskite Photodetectors Conferred Using Interfacial Engineering of Self‐Assembled Monolayers DOI
Chih‐Yuan Sung, Wei‐Cheng Chen, Cheng‐Liang Liu

et al.

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(18)

Published: Feb. 27, 2024

Abstract Quasi‐2D ( q ‐2D) perovskites are extensively studied due to their hybrid properties of 3D and 2D phases have proven be applied a wide range optoelectronics. Multiple device engineering methods for perovskite photodetectors developed. However, the treatment self‐assembled monolayer (SAM) is rarely discussed. Herein, series silane‐coupling agents (3‐chloropropyl)trichlorosilane (CPTS), phenyltrichlorosilane, (3‐aminopropyl)triethoxysilane adopted as SAM materials elucidated influence on ‐2D/3D CsPbBr 3 films photodetector performance. The optical morphology results reveal that film CPTS‐modified surface can prolong excitons’ lifetime, produce larger grain size better distribution, while also present crystallinity united orientation. As fabricated photodetectors, has highest photocurrent 5.46 × 10 −8 A, responsivity 0.16 A W −1 , an 18‐times‐higher specific detectivity than pristine counterpart, which comes from higher energy favorable level alignment. shows stability surface. This study pioneers by using SAMs ‐2D provides facile route fabrication photodetectors.

Language: Английский

Citations

2
High-Performance Sn-Based Quasi-Two-Dimensional Perovskite Photodetectors by Altering Dark Current Shunt Pathways DOI
Jiazhen Yang, Huafang Zhang, Hong Cui

et al.

ACS Photonics, Journal Year: 2024, Volume and Issue: 11(3), P. 1181 - 1188

Published: March 6, 2024

Self-powered perovskite photodetectors (PDs) have been widely used in the fields of communications and imaging, but their performance is still restricted by high dark current devices. This study has shown that PDs can be significantly reduced adjusting composition shunting paths. We fabricated a less toxic high-performance based on two-dimensional tin-based BA2FASn2I7. By controlling grain size film with potassium salt hydroquinone sulfonic acid (KHQSA), we increased number horizontal paths was to 1/50th its original value. The device shows responsivity 1.4 A W–1, detectivity 8.2 × 1013 Jones, maximum on/off ratio 6.74 105, rapid rise/decay time 12.2/14 ms. In addition, as light signal receiver an imaging system, accurately sensitively identify signals under weak conditions. provides new way for further improving self-powered vertical

Language: Английский

Citations

2
Strategies for suppressing dark current of perovskite photodiodes towards reliable optoelectronic applications DOI
Yue Wang, Qing Song, Deli Li

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(29), P. 10775 - 10805

Published: Jan. 1, 2024

Understanding the components and mechanisms of dark current in metal halide perovskite-based photodiodes (MHPPDs) implementing techniques to suppress it enable achieving significantly enhanced performance stability.

Language: Английский

Citations

2
A‐Site Engineering with Thiophene‐Based Ammonium for High‐Efficiency 2D/3D Tin Halide Perovskite Solar Cells DOI Creative Commons
Guitao Feng, Hok‐Leung Loi, Tianyue Wang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 64(1)

Published: Oct. 15, 2024

Tin halide perovskites are the most promising candidate materials for lead-free perovskite solar cells (PSCs) thanks to their low toxicity and ideal band gap energies. The introduction of 2D/3D mixed phases in tin-based PSCs (TPSCs) has proven be effective approach improving device efficiency stability. However, a 2D phase normally shows relatively carrier mobility, which will unfavorable transfer devices. In this work, we used thiophene-based cation 2-(thiophen-3-yl)ethan-1-aminium (3-TEA) as spacer form novel TPSCs, effect on performance enhancement comparison with other cations like 2-(thiophen-2-yl)ethan-1-aminium (2-TEA) benzene-based 2-phenylethan-1-aminium (PEA). Theoretical calculations reveal that 3-TEA enables compact crystal packing [SnI

Language: Английский

Citations

2
Developments in perovskite photodetectors: performance optimization and dimensional diversity DOI
Saravanan Pandiaraj, Sikandar Aftab, Ganesh Koyyada

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(35), P. 13727 - 13744

Published: Jan. 1, 2024

The remarkable photodetection qualities of perovskite photodetectors (PDs), such as their low cost and high responsivity, have attracted a lot attention.

Language: Английский

Citations

1
A‐Site Engineering with Thiophene‐Based Ammonium for High‐Efficiency 2D/3D Tin Halide Perovskite Solar Cells DOI Creative Commons
Guitao Feng, Hok‐Leung Loi, Tianyue Wang

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 137(1)

Published: Oct. 15, 2024

Abstract Tin halide perovskites are the most promising candidate materials for lead‐free perovskite solar cells (PSCs) thanks to their low toxicity and ideal band gap energies. The introduction of 2D/3D mixed phases in tin‐based PSCs (TPSCs) has proven be effective approach improving device efficiency stability. However, a 2D phase normally shows relatively carrier mobility, which will unfavorable transfer devices. In this work, we used thiophene‐based cation 2‐(thiophen‐3‐yl)ethan‐1‐aminium (3‐TEA) as spacer form novel TPSCs, effect on performance enhancement comparison with other cations like 2‐(thiophen‐2‐yl)ethan‐1‐aminium (2‐TEA) benzene‐based 2‐phenylethan‐1‐aminium (PEA). Theoretical calculations reveal that 3‐TEA enables compact crystal packing [SnI 6 ] 4− octahedral layers, resulting lowest hole mass formation energy phase. This significantly enhances stability by facilitating more efficient within These findings indicate well‐suited high‐performance TPSCs.

Language: Английский

Citations

0