Surface Defects Management by In Situ Etching with Methanol for Efficient Inverted Inorganic Perovskite Solar Cells DOI

Hongrui Sun,

Sanlong Wang,

Shanshan Qi

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(23)

Published: March 15, 2023

Abstract Inorganic perovskite solar cells (IPSCs) have developed rapidly due to their good thermal stability and the bandgap suitable for perovskite/silicon tandem cells. However, large open‐circuit voltage (V OC ) deficit derived from surface defects energy level structure mismatch impede development of device performance, especially in P‐I‐N IPSCs. Herein, an innovative situ etching (ISE) treatment method is proposed reduce through methanol without additional passivator. It found that films treated with result a slight excess PbI 2 on inserted into grain boundaries. Therefore, successful decrease by passivation boundary greatly trap density films. And larger work function contributes band bending downward forms gradient alignment at I/N interface, which accelerates extraction charge carriers. As result, efficiency CsPbI 2.85 Br 0.15 inverted IPSC enhanced 16.00% 19.34%, one mostly efficient This provides original idea passivator manage inorganic perovskite.

Language: Английский

Improved charge extraction in inverted perovskite solar cells with dual-site-binding ligands DOI
Hao Chen, Cheng Liu, Jian Xu

et al.

Science, Journal Year: 2024, Volume and Issue: 384(6692), P. 189 - 193

Published: April 11, 2024

Inverted (pin) perovskite solar cells (PSCs) afford improved operating stability in comparison to their nip counterparts but have lagged power conversion efficiency (PCE). The energetic losses responsible for this PCE deficit pin PSCs occur primarily at the interfaces between and charge-transport layers. Additive surface treatments that use passivating ligands usually bind a single active binding site: This dense packing of electrically resistive passivants perpendicular may limit fill factor PSCs. We identified two neighboring lead(II) ion (Pb

Language: Английский

Citations

532
Record‐Efficiency Flexible Perovskite Solar Cells Enabled by Multifunctional Organic Ions Interface Passivation DOI
Lu Yang, Jiangshan Feng, Zhike Liu

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(24)

Published: April 18, 2022

Flexible perovskite solar cells (f-PSCs) have attracted great attention because of their unique advantages in lightweight and portable electronics applications. However, efficiencies are far inferior to those rigid counterparts. Herein, a novel histamine diiodate (HADI) is designed based on theoretical study modify the SnO2 /perovskite interface. Systematic experimental results reveal that HADI serves effectively as multifunctional agent mainly three aspects: 1) surface modification realign conduction band upward improve interfacial charge extraction; 2) passivating buried surface, 3) bridging between layers for effective transfer. Consequently, MA-free PSCs HADI-SnO2 electron transport layer (ETL) display not only high champion power conversion efficiency (PCE) 24.79% open-circuit voltage (VOC ) 1.20 V but also outstanding stability demonstrated by preserving 91% initial after being exposed ambient atmosphere 1200 h without any encapsulation. Furthermore, solution-processed ETL formed at low temperature (100 °C) utilized f-PSCs achieve PCE 22.44%, highest reported date.

Language: Английский

Citations

318
Tailoring passivators for highly efficient and stable perovskite solar cells DOI
Hong Zhang, Lukas Pfeifer, Shaik M. Zakeeruddin

et al.

Nature Reviews Chemistry, Journal Year: 2023, Volume and Issue: 7(9), P. 632 - 652

Published: July 18, 2023

Language: Английский

Citations

210
Hydrazide Derivatives for Defect Passivation in Pure CsPbI3 Perovskite Solar Cells DOI
Yuhang Che, Zhike Liu, Yuwei Duan

et al.

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(33)

Published: June 1, 2022

All-inorganic CsPbI3 perovskite presents preeminent chemical stability and a desirable band gap as the front absorber for perovskite/silicon tandem solar cells. Unfortunately, cells (PSCs) still show low efficiency due to high density of defects in solution-prepared films. Herein, three kinds hydrazide derivatives (benzoyl hydrazine (BH), formohydrazide (FH) benzamide (BA)) are designed reduce defect stabilize phase . Calculation characterization results corroborate that carboxyl groups BH form strong bonds with Pb2+ ions, resulting synergetic double coordination. In addition, group also forms hydrogen bond iodine assist Consequently, 20.47 % is achieved, which highest PCE among all pure -based PSCs reported date. an unencapsulated device showed excellent ambient air.

Language: Английский

Citations

154
Ionic Liquid Treatment for Highest‐Efficiency Ambient Printed Stable All‐Inorganic CsPbI3 Perovskite Solar Cells DOI

Yachao Du,

Qingwen Tian,

Xiaoming Chang

et al.

Advanced Materials, Journal Year: 2021, Volume and Issue: 34(10)

Published: Dec. 29, 2021

All-inorganic cesium lead triiodide (CsPbI3 ) perovskite is well known for its unparalleled stability at high temperatures up to 500 °C and under oxidative chemical stresses. However, upscaling solar cells via ambient printing suffers from imperfect crystal quality defects caused by uncontrollable crystallization. Here, the incorporation of a low concentration novel ionic liquid reported as being promising managing in CsPbI3 films, interfacial energy alignment, device fabricated blade-coating. Both theoretical simulations experimental measurements reveal that successfully regulates thin-film growth decrease grain boundaries, strongly coordinates with undercoordinated Pb2+ passivate iodide vacancy defects, aligns interface barrier electron-transporting layer, relaxes lattice strain promote phase stability. Consequently, printed power conversion efficiency 20.01% 1 sun illumination (100 mW cm-2 37.24% indoor light (1000 lux, 365 µW are achieved; both highest all-inorganic corresponding applications. Furthermore, bare show an impressive long-term only ≈5% PCE degradation after 1000 h aging conditions.

Language: Английский

Citations

139
21.15%‐Efficiency and Stable γ ‐CsPbI3 Perovskite Solar Cells Enabled by an Acyloin Ligand DOI
Jungang Wang, Yuhang Che, Yuwei Duan

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(12)

Published: Jan. 9, 2023

Cesium lead triiodide (CsPbI3 ) is a promising light-absorbing material for constructing perovskite solar cells (PSCs) owing to its favorable bandgap and thermal tolerance. However, the high density of defects in CsPbI3 film not only act as recombination centers, but also facilitate ion migration, leading lower PCE inferior stability compared with state-of-the-art organic-inorganic hybrid PSC counterpart. Theoretical analyses suggest that effective suppression helpful improving device performance. Herein, stable efficient γ -CsPbI3 PSCs are demonstrated by developing an acyloin ligand (1,2-di(thiophen-2-yl)ethane-1,2-dione (DED)) phase stabilizer defect passivator. The experiment calculation results confirm carbonyl thienyl DED can synergistically interact forming chelate effectively passivate Pb-related further suppress migration. Consequently, DED-treated yield champion 21.15%, which one highest among all reported date. In addition, unencapsulated DED-CsPbI3 retain 94.9% itsinitial when stored under ambient conditions 1000 h 92.8% initial constant illumination 250 h.

Language: Английский

Citations

131
A Versatile Molten‐Salt Induction Strategy to Achieve Efficient CsPbI3 Perovskite Solar Cells with a High Open‐Circuit Voltage >1.2 V DOI

Yuqi Cui,

Jiangjian Shi, Fanqi Meng

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(45)

Published: Sept. 12, 2022

All-inorganic CsPbI3 perovskite has emerged as an important photovoltaic material due to its high thermal stability and suitable bandgap for tandem devices. Currently, the cell performance of solar cells is mainly subject a large open-circuit voltage (VOC ) deficit. Herein, multifunctional room-temperature molten salt, dimethylamine acetate (DMAAc) demonstrated, which not only directly acts solvent precursor solutions, but also regulates phase conversion process film high-efficiency photovoltaics. DMAAc can stabilize DMAPbI3 structure eliminate Cs4 PbI6 intermediate phase, easily spatially segregated. Meanwhile, new homogeneous DMAPb(I,Ac)3 formed, finally affords high-quality films. With this approach, charge capture activity defects in significantly suppressed. Consequently, VOC 1.25 V >21% power efficiency are achieved, record highest reported thus far. This phase-regulation strategy believed be applicable other systems.

Language: Английский

Citations

121
Suppressed recombination for monolithic inorganic perovskite/silicon tandem solar cells with an approximate efficiency of 23% DOI Creative Commons

Sanlong Wang,

Pengyang Wang, Bingbing Chen

et al.

eScience, Journal Year: 2022, Volume and Issue: 2(3), P. 339 - 346

Published: April 19, 2022

Potentially temperature-resistant inorganic perovskite/silicon tandem solar cells (TSCs) are promising devices for boosting efficiency past the single-junction silicon limit. However, undesirable non-radiative recombination generally leads to a significant voltage deficit. Here, we introduce an effective strategy using nickel iodide, halide salt, passivate iodine vacancies and suppress recombination. NiI2-treated CsPbI3-xBrx perovskite with 1.80 ​eV bandgap exhibited of 19.53% 1.36 ​V, corresponding deficit 0.44 ​V. Importantly, treated device demonstrated excellent operational stability, maintaining 95.7% its initial after maximum power point tracking 300 ​h under continuous illumination in N2 atmosphere. By combining this top cell narrower bottom cell, first time achieved monolithic TSCs, which 22.95% open-circuit 2.04 This work provides passivation materials achieve efficient stable cells.

Language: Английский

Citations

118
Recent progress in perovskite solar cells: material science DOI Open Access
Jiang‐Yang Shao, Dongmei Li, Jiangjian Shi

et al.

Science China Chemistry, Journal Year: 2022, Volume and Issue: 66(1), P. 10 - 64

Published: Dec. 2, 2022

Language: Английский

Citations

117
Recent Advances in Wide-Bandgap Organic–Inorganic Halide Perovskite Solar Cells and Tandem Application DOI Creative Commons

Ting Nie,

Zhimin Fang, Xiaodong Ren

et al.

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: March 21, 2023

Perovskite-based tandem solar cells have attracted increasing interest because of its great potential to surpass the Shockley-Queisser limit set for single-junction cells. In architectures, wide-bandgap (WBG) perovskites act as front absorber offer higher open-circuit voltage (V

Language: Английский

Citations

115