A Comprehensive Review of Self-Assembled Monolayers as Hole-Transport Layers in Inverted Perovskite Solar Cells DOI Creative Commons

Yuchen Yuan,

Houlin Li,

Haiqiang Luo

et al.

Energies, Journal Year: 2025, Volume and Issue: 18(10), P. 2577 - 2577

Published: May 16, 2025

The hole-transport layer (HTL) plays a pivotal role in engineering high-performance inverted perovskite solar cells (PSCs), as it governs both hole extraction/transport dynamics and critically impacts the crystallization quality of absorber device architectures. Recent advancements have highlighted self-assembled monolayers (SAMs) promising candidates for next-generation HTL materials PSCs due to their intrinsic advantages over conventional counterparts. These molecularly engineered interfaces demonstrate superior characteristics including simplified purification processes, tunable molecular structures, enhanced interfacial compatibility with substrates. This review systematically examines progress, existing challenges, future prospects SAM-based HTLs photovoltaic systems, aiming establish systematic framework understanding structure–property relationships. is organized into three sections: (1) fundamental architecture PSCs, (2) design principles SAMs emphasis on head-group functionality, (3) recent breakthroughs SAM-engineered modification strategies optimization. Through critical analysis performance benchmarks approaches, we elucidate technological merits inherent limitations SAM implementation devices. Furthermore, propose strategic directions advancing development, focusing customization achieve efficiency stability targets. comprehensive work aims knowledge platform accelerating rational SAM-modified optoelectronic

Language: Английский

Thiophene Substituent Engineering of Carbazole Based Self‐Assembled Monolayers for Use in High‐Performance Inverted Perovskite Solar Cells DOI Open Access
Peng Zhao,

Dingqian He,

Xu Fu

et al.

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

Published: Feb. 21, 2025

Abstract Carbazole‐based self‐assembled monolayers (SAMs) are widely used in inverted perovskite solar cells (PSCs). However, the biased intermolecular assembly of SAM molecules, and lack Lewis ‐basic heteroatoms to efficiently tune crystallinity perovskites passivate interface defects still limited further improvement efficiency stability for PSCs involving carbazole‐based SAMs. Herein, a novel 3,6‐dithiophene molecule (named CzTh) is designed via substituent engineering strategy, which demonstrated effectively solve obstacles. The theory experiment find that introduction thiophene regulated SAMs with carbazole core terms surface wettability precursor solvent, energy level alignment, crystallization films passivation, attributed dipole moment changes, base property S atom. Consequently, CzTh achieved enhanced power conversion (PCE) excellent air stability, compared commercial (Me‐4PACz). As an “one‐stone‐three‐birds” design strategy SAMs, “thiophene‐substitution” tunes crystallization, passivates defects, enhances hole injection at perovskite/SAMs PSCs.

Language: Английский

Citations

0
Scalable Passivation of Perovskite Solar Cells Using Evaporated CsPbCl3 DOI Open Access
Youpeng Wang,

You Gao,

Pengfei Liu

et al.

Solar RRL, Journal Year: 2025, Volume and Issue: unknown

Published: March 16, 2025

The suboptimal interfacial quality between the perovskite absorption layer and electron‐transport constrains performance of solar cells. Introducing an interface passivation is generally recognized as effective method for addressing this issue. A uniform film with a large area can be prepared using evaporation technique. In study, we designed fabricated inorganic CsPbCl 3 by coevaporation PbCl 2 CsCl. evaporated passivator exhibited excellent effects relatively low thickness sensitivity to device performance. As result, open‐circuit voltage cells 1.68 eV absorber was improved nearly 100 mV, efficiency achieved 21.84%, ranking highest based on hybrid evaporation‐solution method. proposed approach has potential applications in large‐area

Language: Английский

Citations

0
Scalable Modification of an Evaporated Self-Assembled Transport Layer through Evaporated CuSCN DOI
Jing Wen, Youpeng Wang, Pengfei Liu

et al.

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

Published: April 26, 2025

The [4-(3,6-dimethyl-9H-carbazol-9-yl)butyl]phosphonic acid (Me-4PACz) self-assembled monolayer (SAM) deposited by solution processing has been widely used as an excellent hole-transporting material in high-performance inverted perovskite solar cells (PSCs). While vacuum-based evaporation of Me-4PACz offers significant potential for large-scale PSC fabrication, its application is hindered the poor wettability evaporated SAM, which adversely affects device performance. In this work, cuprous thiocyanate (CuSCN) film was employed to modify Me-4PACz, can improve wettability, leading enhanced coverage and uniformity film. addition, incorporation CuSCN established energy level gradient at SAM-perovskite interface, facilitating efficient hole transport. Moreover, layer contributed interface passivation, effectively reducing recombination losses. As a result, efficiency 21.62% single-junction wide-bandgap PSCs (1.68 eV) achieved. Additionally, films fabricated show good on large-area substrate, laying foundation PSCs.

Language: Английский

Citations

0
Enhanced Buried Selective Contacts via Dual‐Sided Passivation for Efficient and Stable Perovskite Solar Cells DOI
Zhiyu Wang, Rui Su, Qianru Zhang

et al.

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

Published: April 27, 2025

Abstract Self‐assembled monolayers (SAMs) play a crucial role in high‐performance perovskite solar cells (PSCs). However, the incompatibility between nonpolar head groups of SAMs and polar precursor solutions leads to SAM assembly defects wettability issues, consequently impacting device efficiency. Moreover, uneven distribution hydroxyl on surface conventional transparent conductive oxide substrates is detrimental onto them. Here, dual‐sided passivation strategy reported based co‐adsorbed approach, which (4‐(3,6‐dimethyl‐9H‐carbazole‐9‐yl)butyl)phosphonic acid (Me‐4PACz) doped with phaclofen (PLF) self‐assembly NiO x substrate. By compensating for unanchored sites Me‐4PACz, phosphonic PLF adsorb surface, enabling more uniform ordered anchoring as well improved deposition. This optimized morphology enhanced interface contact. Additionally, amino passivate at buried interface, suppressing non‐radiative recombination during charge transport. The champion PSC fabricated using this achieves high fill factor 84.92%, power conversion efficiency 24.04%, excellent long‐term stability under ISOS‐D‐1I ISOS‐T‐1I protocols, maintaining over 85% initial after >1000 h thermal cycling conditions.

Language: Английский

Citations

0
Advancing Self‐Assembled Molecules Toward Interface‐Optimized Perovskite Solar Cells: from One to Two DOI Creative Commons
Tanghao Liu, Chuanyao Luo,

Ruiqin He

et al.

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

Published: April 29, 2025

Abstract Perovskite solar cells (PSCs) have rapidly gained prominence as a leading candidate in the realm of solution‐processable third‐generation photovoltaic (PV) technologies. In high‐efficiency inverted PSCs, self‐assembled monolayers (SAMs) are often used hole‐selective layers (HSLs) due to advantages high transmittance, energy level matching, low non‐radiative recombination loss, and tunable surface properties. However, SAMs been recognized suffer from some shortcomings, such incomplete coverage, weak bonding with substrate or perovskite, instability, so on. The combination different so‐called co‐SAM is an effective strategy overcome this challenge. Perspective, latest achievements molecule design, deposition method, working principle, application discussed. This comprehensive overview milestones advancing research field, coupled in‐depth analysis improved interface properties using approach, aims offer valuable insights into key design principles. Furthermore, lessons learned will guide future development SAM‐based HSLs perovskite‐based optoelectronic devices.

Language: Английский

Citations

0
A Comprehensive Review of Self-Assembled Monolayers as Hole-Transport Layers in Inverted Perovskite Solar Cells DOI Creative Commons

Yuchen Yuan,

Houlin Li,

Haiqiang Luo

et al.

Energies, Journal Year: 2025, Volume and Issue: 18(10), P. 2577 - 2577

Published: May 16, 2025

The hole-transport layer (HTL) plays a pivotal role in engineering high-performance inverted perovskite solar cells (PSCs), as it governs both hole extraction/transport dynamics and critically impacts the crystallization quality of absorber device architectures. Recent advancements have highlighted self-assembled monolayers (SAMs) promising candidates for next-generation HTL materials PSCs due to their intrinsic advantages over conventional counterparts. These molecularly engineered interfaces demonstrate superior characteristics including simplified purification processes, tunable molecular structures, enhanced interfacial compatibility with substrates. This review systematically examines progress, existing challenges, future prospects SAM-based HTLs photovoltaic systems, aiming establish systematic framework understanding structure–property relationships. is organized into three sections: (1) fundamental architecture PSCs, (2) design principles SAMs emphasis on head-group functionality, (3) recent breakthroughs SAM-engineered modification strategies optimization. Through critical analysis performance benchmarks approaches, we elucidate technological merits inherent limitations SAM implementation devices. Furthermore, propose strategic directions advancing development, focusing customization achieve efficiency stability targets. comprehensive work aims knowledge platform accelerating rational SAM-modified optoelectronic

Language: Английский

Citations

0