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

и другие.

Angewandte Chemie, Год журнала: 2024, Номер 137(1)

Опубликована: Окт. 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.

Язык: Английский

Improve the Charge Carrier Transporting in Two‐Dimensional Ruddlesden–Popper Perovskite Solar Cells DOI
Dong Xue, Xin Li, Xiaobo Wang

и другие.

Advanced Materials, Год журнала: 2024, Номер 36(19)

Опубликована: Фев. 7, 2024

Abstract Conventional 3D organic–inorganic halide perovskite materials have shown substantial potential in the field of optoelectronics, enabling power conversation efficiency solar cells beyond 26%. A key challenge limiting further commercial application is their inherent instability over outer oxygen, humidity, light, and heat. By contrast, 2D Ruddlesden–Popper (2DRP) perovskites with bulky organic cations can effectively stabilize inorganic slabs, yielding excellent environmental stability. However, efficiencies 2DRP are much lower than those counterparts due to poor charge carrier transporting property insulating cations. Their inner structural, dielectric, optical, excitonic properties remain be primarily studied. In this review, main reasons for low first analyzed. Next, a detailed description various strategies improving provided, such as bandgap regulation, crystal phase orientation distribution, energy level matching, interfacial modification, etc. Finally, summary given, possible future research directions methods achieve high‐efficiency stable rationalized.

Язык: Английский

Процитировано

29

What Matters for the Charge Transport of 2D Perovskites? DOI
Yixin Zhang, Mojtaba Abdi‐Jalebi, Bryon W. Larson

и другие.

Advanced Materials, Год журнала: 2024, Номер 36(31)

Опубликована: Май 23, 2024

Compared to 3D perovskites, 2D perovskites exhibit excellent stability, structural diversity, and tunable bandgaps, making them highly promising for applications in solar cells, light-emitting diodes, photodetectors. However, the trade-off worse charge transport is a critical issue that needs be addressed. This comprehensive review first discusses structure of metal halide then summarizes significant factors influencing detail provides brief overview testing methods. Subsequently, various strategies improve are presented, including tuning A'-site organic spacer cations, A-site B-site X-site ions. Finally, an outlook on future development improving perovskites' discussed.

Язык: Английский

Процитировано

21

MAPbX3 Perovskite Single Crystals for Advanced Optoelectronic Applications: Progress, Challenges, and Perspective DOI Open Access
Dong Xue, Yue Shen, Fangmin Wang

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Фев. 2, 2025

Abstract Perovskite single crystals have garnered significant attention due to their impressive properties in optoelectronic applications, including long carrier diffusion lengths, low trap‐state densities, and enhanced stability. Methylamino lead halide perovskite (MAPbX 3 , where X is a halogen such as Cl, Br, or I) notable example of metal with desirable ideal cubic perovskites tolerance factor between 0.9 1.0. MAPbX has adjustable bandgap, high thermal chemical stability, excellent light absorption capacity. Here the unique characteristics molecular structure, optical properties, transport are summarized. Universal growth technologies for crystals, inverse temperature crystallization, anti‐solvent evaporation solvent method, single‐crystalline thin film, epitaxial method space limiting briefly introduced. Additionally, comprehensive review various device photodetectors, X‐ray detectors, light‐emitting diodes, lasers, solar cells mainly discussed. Finally, current challenges future prospects large‐scale preparation put forward. With continuous progress photoelectric technology, more innovative applications expected bring convenience progress.

Язык: Английский

Процитировано

3

Dual‐Site Molecular Dipole Enables Tunable Interfacial Field Toward Efficient and Stable Perovskite Solar Cells DOI
Junwei Shi,

Muhammad Waqas Samad,

Fangchao Li

и другие.

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 5, 2024

Abstract The interfacial management in perovskite solar cells (PSCs), including mitigating the carrier transport barrier and suppressing non‐radiative recombination, still remains a significant challenge for efficiency stability enhancement. Herein, by screening family of fluorine (F) terminated dual‐site organic dipole molecules, study aims to gain insight into molecular array toward tunable field. Both experimental theoretical results reveal that these functional molecules can effectively anchor on surface through Lewis acid‐base interaction. In addition, tailored side‐chain with F atoms allows altering constructing well matched perovskite/Spiro‐OMeTAD contact. As result, inserting modulates interface deliver gradient energy level alignment, facilitating extraction transport. optimal trifluoro‐methanesulfonamide mediated N‐i‐P PSCs achieve highest 25.47%, together enhanced operational under 1000 h simulated 1‐sun illumination exposure. These findings are believed provide design sufficient tunability perovskite‐based optoelectronic devices.

Язык: Английский

Процитировано

8

Ordered Perovskite Structure with Functional Units for High Performance and Stable Solar Cells DOI
Yulong Wang, Jiahui Chen, Yuxi Zhang

и другие.

Advanced Materials, Год журнала: 2024, Номер 36(25)

Опубликована: Апрель 4, 2024

Ion migration is one of the most critical challenges that affects stability metal-halide perovskite solar cells (PSCs). However, current arsenal available strategies for solving this issue limited. Here, novel active layers following concept ordered structures with functional units (OSFU) to intrinsically suppress ion migration, in which a three-dimensional (3D) layer deposited by vapor deposition light absorption and 2D solution process inhibition, are constructed. As promising result, activation energy increases from 0.36 eV conventional 0.54 OSFU perovskite. These devices exhibit substantially enhanced operational comparison ones, retaining >85% their initial efficiencies after 1200 h under ISOS-L-1. Moreover, show negligible fatigue behavior robust performance light/dark cycling aging test (ISOS-LC-1 protocol), demonstrates application motif theory field.

Язык: Английский

Процитировано

6

A Novel Thiazole‐Core Spacer Based Dion–Jacobson Perovskite with Type II Quantum Well Structure for Efficient Photovoltaics DOI
Lin Zhang, Yiqing Zhang, Haotian Wu

и другие.

Advanced Energy Materials, Год журнала: 2024, Номер 14(34)

Опубликована: Июль 6, 2024

Abstract 2D Dion–Jacobson (DJ) perovskites show structural stability and tunability are regarded as promising photovoltaic materials. The spacer cations play an important impact on exciton separation charge transport of perovskites. Herein, a novel with thiazole core, 2‐thiazolemethanammonium (AMT), owning characters small molecular size, delocalized π‐electrons, strong electron‐withdrawing ability, is introduced to construct DJ Owing the orbital coupling between AMT inorganic layers, AMT‐based perovskite exhibits type II quantum well structure, which favorable for separation. On contrary, such interaction does not appear in when aliphatic propyldiammonium (PDA), similar length, used spacer. can also induce better crystallinity, resulting reduced defect density improved ability. optimized device based (AMT)MA 3 Pb 4 I 13 power conversion efficiency (PCE) 19.69%, record solar cells (PSCs) ( n ≤ 4). This work provides deep understanding aromatic electronic structure corresponding performance new opportunity toward highly efficient stable PSCs.

Язык: Английский

Процитировано

6

Tailored Polymer Hole‐Transporting Materials with Multisite Passivation Functions for Effective Buried‐Interface Engineering of Inverted Quasi‐2D Perovskite Solar Cells DOI Creative Commons
Xiujie Zhao,

Yinyu Bao,

Zhengwu Pan

и другие.

Advanced Science, Год журнала: 2024, Номер unknown

Опубликована: Окт. 23, 2024

Abstract Although quasi‐2D Ruddlesden‒Popper (RP) perovskite exhibits advantages in stability, their photovoltaic performance are still inferior to 3D counterparts. Optimizing the buried interface of RP and suppress energetic losses can be a promising approach for enhancing efficiency stability inverted solar cells (PSCs). Among which, constructing polymer hole‐transporting materials (HTMs) with defect passivation functions is great significance buried‐interface engineering PSCs. Herein, by employing side‐chain tailoring strategy extend π‐conjugation regulate functionality groups, target HTMs (PVCz‐ThSMeTPA PVCz‐ThOMeTPA) high mobility multisite achieved. The presence more sulfur atom‐containing groups endows PVCz‐ThSMeTPA increased intra/intermolecular interaction, appropriate energy level, enhanced interfacial interactions perovskite. hole up 9.20 × 10 −4 cm 2 V −1 S . Furthermore, as multifunctional HTM multiple chemical anchor sites PSCs enable effective charge extraction, defects passivation, crystallization modulation. Eventually, PVCz‐ThSMeTPA‐based PSC achieves champion power conversion 22.37%, which represents one highest efficiencies reported date

Язык: Английский

Процитировано

6

Molecular Structure Tailoring of Organic Spacers for High-Performance Ruddlesden–Popper Perovskite Solar Cells DOI Creative Commons

Pengyun Liu,

Xuejin Li, Tonghui Cai

и другие.

Nano-Micro Letters, Год журнала: 2024, Номер 17(1)

Опубликована: Окт. 10, 2024

Abstract Layer-structured Ruddlesden–Popper (RP) perovskites (RPPs) with decent stability have captured the imagination of photovoltaic research community and bring hope for boosting development perovskite solar cell (PSC) technology. However, two-dimensional (2D) or quasi-2D RP PSCs are encountered some challenges large exciton binding energy, blocked charge transport poor film quality, which restrict their performance. Fortunately, these issues can be readily resolved by rationally designing spacer cations RPPs. This review mainly focuses on how to design molecular structures organic spacers aims endow RPPs outstanding applications. We firstly elucidated important roles in impacting crystallization kinetics, transporting ability Then we brought three aspects attention spacers. Finally, presented specific structure strategies aiming improve performance PSCs. These proposed this will provide new avenues develop novel advance RPP technology future

Язык: Английский

Процитировано

4

Uniform Phase Permutation of Efficient Ruddlesden–Popper Perovskite Solar Cells via Binary Spacers and Single Crystal Coordination DOI Open Access
Zijia Li, Hao Gu, Xiaolong Liu

и другие.

Advanced Materials, Год журнала: 2024, Номер 36(48)

Опубликована: Окт. 12, 2024

Abstract 2D Ruddlesden‐Popper perovskites (RPPs) have attracted extensive attention in recent years due to their excellent environmental stability. However, the power conversion efficiency (PCE) of RPP solar cells is much lower than that 3D perovskite (PSCs), mainly attributed poor carrier transport performance and excessive heterogeneous phases. Herein, binary spacers ( n ‐butylammonium, BA benzamidine, PFA) are introduced regulate crystallization kinetics ‐value phase distribution form uniform permutation films. The study then incorporates = 5 2 MA 4 Pb I 16 memory single crystal achieve ultrafast stepped‐type from low phases high high‐quality (BA 0.75 PFA 0.25 ) These single‐crystal‐assisted strategies produce films, leading fast extraction significant nonradiative recombination suppression. resulting PSC presents a champion PCE 21.15% with an impressive open circuit voltage V OC 1.26 V, which record for n‐ value ≤ 5).

Язык: Английский

Процитировано

4

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

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 64(1)

Опубликована: Окт. 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

Язык: Английский

Процитировано

3