Guanidinium Iodide-Modified PEDOT:PSS Hole Transport Layer for Improving the Performance of 2D Perovskite Solar Cells DOI
Xiang Chen, Fei Zheng,

Yanna Hou

et al.

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

Published: April 17, 2025

Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has been widely used as a hole transporting layer (HTL) in two-dimensional (2D) Ruddlesden-Popper perovskite (RPP)-based solar cells (2D-PSCs) due to its simple preparation process and low cost. However, the devices based on PEDOT:PSS exhibit efficiency poor stability number of buried interfacial defects, energy level mismatching, corrosivity HTL. In this study, guanidinium iodide (GAI)-modified HTL was adopted tune crystallization 2D RPPs, leading formation films with preferential crystal orientation, improved crystallinity, suppressed defect density. The addition GAI not only enhances conductivity intrinsic layers but also improves their matching those films. Upon doping into PEDOT:PSS, power conversion 2D-PSCs increased from 13.11% 16.04% maintained 80% initial value under 65% relative humidity condition for 60 days. This work demonstrates novel synergetic modification strategy gives new insight underlying mechanism, which should lead further improvements performance other optoelectronic RPPs.

Language: Английский

Self-assembled hole-selective contact for efficient Sn-Pb perovskite solar cells and all-perovskite tandems DOI Creative Commons
Jingwei Zhu, Xiaozhen Huang, Yi Luo

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 2, 2025

Self-assembled monolayers (SAMs) have displayed unpredictable potential in efficient perovskite solar cells (PSCs). Yet most of SAMs are largely suitable for pure Pb-based devices, precisely developing promising hole-selective contacts (HSCs) Sn-based PSCs and exploring the underlying general mechanism fundamentally desired. Here, based on prototypical donor-acceptor SAM MPA-BT-BA (BT), oligoether side chains with different length (i.e., methoxy, 2-methoxyethoxy, 2-(2-methoxyethoxy)ethoxy group) were custom-introduced benzothiadiazole unit to produce target acronyms MPA-MBT-BA (MBT), MPA-EBT-BA (EBT), MPA-MEBT-BA (MEBT), respectively, acting as HSCs Sn-Pb all-perovskite tandems. The introduction enables effectively accelerate hole extraction, regulate crystal growth passivate surface defects perovskites. In particular, benefiting from enhanced film quality suppressed interfacial non-radiative recombination losses, EBT-tailored LBG devices yield a champion efficiency 23.54%, enabling 28.61% monolithic tandems an impressive VOC 2.155 V excellent operational stability well 28.22%-efficiency 4-T development is highly desirable. authors report self-assembled achieve operationally stable

Language: Английский

Citations

7
Methylammonium-free, high-efficiency, and stable all-perovskite tandem solar cells enabled by multifunctional rubidium acetate DOI Creative Commons
Xufeng Liao,

Xuefei Jia,

Weisheng Li

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 30, 2025

All-perovskite tandem solar cells (APTSCs) offer the potential to surpass Shockley-Queisser limit of single-junction at low cost. However, high-performance APTSCs contain unstable methylammonium (MA) cation in tin-lead (Sn-Pb) narrow bandgap subcells. Currently, MA-free Sn-Pb perovskite (PSCs) show lower performance compared with their MA-containing counterparts. This is due high trap density associated Sn2+ oxidation, which exacerbated by rapid crystallization Sn-containing perovskite. Here, a multifunctional additive rubidium acetate (RbAC) proposed passivate We find that RbAC can suppress alleviate microstrain, and improve crystallinity Consequently, resultant PSCs achieve power conversion efficiency (PCE) 23.02%, an open circuit voltage (Voc) 0.897 V, filling factor (FF) 80.64%, more importantly stability device significantly improved. When further integrated 1.79-electron volt wide-bandgap PSC, 29.33% (certified 28.11%) efficient Voc 2.22 volts achieved. The tin (II) oxidation impacts cation-free cells. authors employ for defect passivation stable all-perovskite

Language: Английский

Citations

3
Buried Interface Modulation Using Self‐Assembled Monolayer and Ionic Liquid Hybrids for High‐Performance Perovskite and Perovskite/CuInGaSe2 Tandem Photovoltaics DOI Open Access
Zihao Feng, Xinxing Liu, Ting Tian

et al.

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

Published: Jan. 6, 2025

Effective modifications for the buried interface between self-assembled monolayers (SAMs) and perovskites are vital development of efficient, stable inverted perovskite solar cells (PSCs) their tandem photovoltaics. Herein, an ionic-liquid-SAM hybrid strategy is developed to synergistically optimize uniformity SAMs crystallization above. Specifically, ionic liquid 1-butyl-3-methyl-1H-imidazol-3-iumbis((trifluoromethyl)sulfonyl)amide (BMIMTFSI) incorporated into SAM solution, enabling reduced surface roughness, improved wettability, a more evenly distributed potential film. Leveraging this optimized substrate, favorable growth high-quality crystals achieved. Furthermore, introduced functional ions readily bond with perovskites, effectively passivating undesirable cation or halide vacancies near interface. Remarkably, high power conversion efficiencies (PCEs) 25.68% 22.53% obtained normal-bandgap (≈1.55 eV) wide-bandgap (WBG) (≈1.66 PSCs along operational stability. Additionally, champion PCE 19.50% achieved semitransparent WBG PSCs, further delivering impressive 28.34% integrated four-terminal photovoltaics when combined CuInGaSe2 cells.

Language: Английский

Citations

2
All‐In‐One Additive Enabled Efficient and Stable Narrow‐Bandgap Perovskites for Monolithic All‐Perovskite Tandem Solar Cells DOI
Deng Wang, Mingqian Chen, Lei Xia

et al.

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

Published: Nov. 16, 2024

Abstract Hybrid tin‐lead (Sn‐Pb) perovskites have garnered increasing attention due to their crucial role in all‐perovskite tandem cells for surpassing the efficiency limit of single‐junction solar cells. However, easy oxidation Sn 2+ and fast crystallization Sn‐based perovskite present significant challenges achieving high‐quality hybrid Sn‐Pb films, thereby limiting device's performance stability. Herein, an all‐in‐one additive, 2‐amino‐3‐mercaptopropanoic acid hydrochloride (AMPH) is proposed, which can function as a reducing agent suppress formation 4+ throughout film preparation. Furthermore, strong binding between AMPH precursor significantly slows down process, resulting with enhanced crystallinity. The remaining its products within contribute improves resistance substantial reduction defect density, specifically vacancies. Benefiting from multifunctionalities AMPH, power conversion (PCE) 23.07% achieved narrow‐bandgap best‐performing monolithic cell also exhibits PCE 28.73% (certified 27.83%), among highest reported yet. devices retain over 85% initial efficiencies after 500 hours continuous operation at maximum point under one‐sun illumination.

Language: Английский

Citations

9
Modifying the buried PEDOT:PSS/perovskite interface by dual-functional material to optimize the performance of pure Sn-based Perovskite Solar Cells DOI

Luocheng Chen,

Hengzhuo Cai,

Xinyi Luo

et al.

Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 105743 - 105743

Published: Jan. 1, 2025

Language: Английский

Citations

1
Unveiling the nexus between irradiation and phase reconstruction in tin-lead perovskite solar cells DOI Creative Commons
Wenbo Li, Zhe Li, Shun Zhou

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 8, 2025

Abstract Tin-lead perovskites provide an ideal bandgap for narrow-bandgap in all-perovskite tandem solar cells, fundamentally improving power conversion efficiency. However, light-induced degradation ambient air is a major issue that can hinder the long-term operational stability of these devices. Understanding specifics what occurs during this pathway provides direction device stability. In study, we investigate problem tin-lead under irradiation, counterintuitively discovering irreversible phase reconstruction process. In-situ photoluminescence spectroscopy used to monitor process, which involves reaction oxygen with photoexcited electrons form superoxide. It proposed Pb-rich regions appear on surface after Sn 2+ oxidation, and are reconstituted from yellow formamidinium lead iodide black prolonged irradiation. This study highlights process perovskites, providing valuable insights into superoxide mechanism guiding further improvements cells.

Language: Английский

Citations

1
The progress and challenges of tin-lead alloyed perovskites: Toward the development of large-scale all-perovskite tandem solar cells DOI

Xiao Jia,

Dan Yang,

Dexu Zheng

et al.

Chem, Journal Year: 2025, Volume and Issue: 11(1), P. 102384 - 102384

Published: Jan. 1, 2025

Language: Английский

Citations

1
Efficient 1.77 eV-bandgap perovskite and all-perovskite tandem solar cells enabled by long-alkyl phosphonic acid DOI
Hongling Guan,

Shiqiang Fu,

Guojun Zeng

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Incorporating dodecylphosphonic acid additives into 1.77 eV-bandgap perovskites enabled single-junction solar cells to achieve a PCE of 20.2%. Tandem further reached impressive PCEs 27.41% (two-terminal) and 28.65% (four-terminal).

Language: Английский

Citations

6
Trade-off effect of hydrogen-bonded dopant-free hole transport materials on performance of inverted perovskite solar cells DOI Creative Commons
Zheng Wang, Jiakang Zhang, S M Musfequr Rahman

et al.

Nano Energy, Journal Year: 2024, Volume and Issue: 128, P. 109870 - 109870

Published: June 12, 2024

Language: Английский

Citations

5
Progress of Hole‐Transport Layers in Mixed Sn‐Pb Perovskite Solar Cells DOI
Yujia Sun, Yibin Lai, Yang Yang

et al.

Small, Journal Year: 2024, Volume and Issue: 20(49)

Published: Sept. 26, 2024

Hybrid organic-inorganic lead halide perovskite solar cells (PSCs) have rapidly emerged as a promising photovoltaic technology, with record efficiencies surpassing 26%, approaching the theoretical Shockley-Queisser limit. The advent of all-perovskite tandem (APTSCs), integrating Pb-based wide-bandgap (WBG) mixed Sn-Pb narrow-bandgap (NBG) perovskites, presents compelling pathway to surpass this Despite recent innovations in hole transport layers (HTLs) that significantly improved efficiency and stability lead-based PSCs, an effective HTL tailored for NBG PSCs remains unmet need. This review highlights essential role HTLs enhancing performance focusing on their ability mitigate non-radiative recombination optimize buried interface, thereby improving film quality. distinct attributes such lower energy levels accelerated crystallization rates, necessitate specialized properties. In study, latest advancements are systematically examined encompassing organic, self-assembled monolayer (SAM), inorganic materials, HTL-free designs. critically assesses inherent limitations each category, finally proposes strategies surmount these obstacles reach higher device performance.

Language: Английский

Citations

5