Heterointerface Energetics Regulation Strategy Enabled Efficient Perovskite Solar Cells DOI

Yunfei Zhu,

Zuolin Zhang,

Xuefan Zhao

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(13)

Published: Jan. 10, 2024

Abstract In the domain of perovskite photovoltaics, heterointerfaces are subject to substantial trap‐assisted non‐radiative recombination, predominantly attributed energy offset, interface defects, and roughness contact. This phenomenon at heterointerfaces, where carrier recombination dissipation occur due defects suboptimal level alignment, can be principally held accountable for V oc losses. Herein, a heterointerface energetics regulation (HER) strategy is proposed by introducing potassium trifluoroacetate (KTFA) in precursor solution eliminate trap optimize surface potential Fermi level. It first demonstrated that non‐doping K + but precipitating upper buried will improve energy‐level alignment charge extraction dynamics. addition, TFA − exhibits strong electrostatic force with undercoordinated Pb 2+ contact Sn 4+ SnO 2 electron transporting layer. Based on vacuum flash evaporation green treatment without anti‐solvent, Rb 0.02 (Cs 0.05 FA 0.95 ) 0.98 PbI 0.91 Br 0.03 Cl 0.06 Cs 3 based device achieve maximum efficiency 23.36% 24.48%, respectively. Further, modified devices exhibit 92% initial output after 1200 h aging. HER addressing bandgap poised advance both performance stability solar cells.

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

568
Rapid advances enabling high-performance inverted perovskite solar cells DOI
Qi Jiang, Kai Zhu

Nature Reviews Materials, Journal Year: 2024, Volume and Issue: 9(6), P. 399 - 419

Published: May 17, 2024

Language: Английский

Citations

105
Two-dimensional Perovskitoids Enhance Stability in Perovskite Solar Cells DOI
Cheng Liu, Yi Yang, Hao Chen

et al.

Nature, Journal Year: 2024, Volume and Issue: 633(8029), P. 359 - 364

Published: July 8, 2024

Language: Английский

Citations

75
Molecular cation and low-dimensional perovskite surface passivation in perovskite solar cells DOI
Sam Teale, Matteo Degani, Bin Chen

et al.

Nature Energy, Journal Year: 2024, Volume and Issue: 9(7), P. 779 - 792

Published: July 4, 2024

Language: Английский

Citations

71
A crystal capping layer for formation of black-phase FAPbI 3 perovskite in humid air DOI
Yu Zou, Wenjin Yu, Haoqing Guo

et al.

Science, Journal Year: 2024, Volume and Issue: 385(6705), P. 161 - 167

Published: July 11, 2024

Black-phase formamidinium lead iodide (α-FAPbI 3 ) perovskites are the desired phase for photovoltaic applications, but water can trigger formation of photoinactive impurity phases such as δ-FAPbI . We show that classic solvent system perovskite fabrication exacerbates this reproducibility challenge. The conventional coordinative dimethyl sulfoxide (DMSO) promoted under high relative humidity (RH) conditions because its hygroscopic nature. introduced chlorine-containing organic molecules to form a capping layer blocked moisture penetration while preserving DMSO-based complexes regulate crystal growth. report power conversion efficiencies >24.5% solar cells fabricated across an RH range 20 60%, and 23.4% at 80% RH. unencapsulated device retained 96% initial performance in air (with 40 60% RH) after 500-hour maximum point operation.

Language: Английский

Citations

61
Strategies for Improving Efficiency and Stability of Inverted Perovskite Solar Cells DOI
Wenxiao Zhang, Xuemin Guo,

Zhengbo Cui

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(37)

Published: March 1, 2024

Abstract Perovskite solar cells (PSCs) have attracted widespread research and commercialization attention because of their high power conversion efficiency (PCE) low fabrication cost. The long‐term stability PSCs should satisfy industrial requirements for photovoltaic devices. Inverted with a p‐i‐n architecture exhibit considerable advantages excellent competitive efficiency. continuously broken‐through PCE inverted shows huge application potential. This review summarizes the developments outlines characteristics including charge transport layers (CTLs), perovskite compositions, interfacial regulation strategies. latest effective CTLs, modification, promotion strategies especially under light, thermal, bias conditions are emphatically analyzed. Furthermore, applications structure in high‐efficiency stable tandem, flexible devices, modules main obstacles systematically introduced. Finally, remaining challenges faced by devices discussed, several directions advancing proposed according to development status industrialization requirements.

Language: Английский

Citations

57
Chiral-structured heterointerfaces enable durable perovskite solar cells DOI
Tianwei Duan, Shuai You, Min Chen

et al.

Science, Journal Year: 2024, Volume and Issue: 384(6698), P. 878 - 884

Published: May 23, 2024

Mechanical failure and chemical degradation of device heterointerfaces can strongly influence the long-term stability perovskite solar cells (PSCs) under thermal cycling damp heat conditions. We report chirality-mediated interfaces based on

Language: Английский

Citations

57
Narrow Bandgap Metal Halide Perovskites for All-Perovskite Tandem Photovoltaics DOI Creative Commons
Shuaifeng Hu, Jarla Thiesbrummel, Jorge Pascual

et al.

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(7), P. 4079 - 4123

Published: March 25, 2024

All-perovskite tandem solar cells are attracting considerable interest in photovoltaics research, owing to their potential surpass the theoretical efficiency limit of single-junction cells, a cost-effective sustainable manner. Thanks bandgap-bowing effect, mixed tin-lead (Sn-Pb) perovskites possess close ideal narrow bandgap for constructing matched with wide-bandgap neat lead-based counterparts. The performance all-perovskite tandems, however, has yet reach its potential. One main obstacles that need be overcome is the─oftentimes─low quality Sn-Pb perovskite films, largely caused by facile oxidation Sn(II) Sn(IV), as well difficult-to-control film crystallization dynamics. Additional detrimental imperfections introduced thin film, particularly at vulnerable surfaces, including top and bottom interfaces grain boundaries. Due these issues, resultant device distinctly far lower than theoretically achievable maximum efficiency. Robust modifications improvements surfaces films therefore critical advancement field. This Review describes origins covers efforts made so toward reaching better understanding perovskites, particular respect surface improved stability cells. In addition, we also outline important issues integrating subcells achieving reliable efficient double- multi-junction tandems. Future work should focus on characterization visualization specific defects, tracking evolution under different external stimuli, guiding turn processing stable cell devices.

Language: Английский

Citations

54
Amidination of ligands for chemical and field-effect passivation stabilizes perovskite solar cells DOI
Yi Yang, Hao Chen, Cheng Liu

et al.

Science, Journal Year: 2024, Volume and Issue: 386(6724), P. 898 - 902

Published: Nov. 21, 2024

Surface passivation has driven the rapid increase in power conversion efficiency (PCE) of perovskite solar cells (PSCs). However, state-of-the-art surface techniques rely on ammonium ligands that suffer deprotonation under light and thermal stress. We developed a library amidinium ligands, interest for their resonance effect–enhanced N–H bonds may resist deprotonation, to stability layers surfaces. This strategy resulted >10-fold reduction ligand equilibrium constant twofold maintenance photoluminescence quantum yield after aging at 85°C illumination air. Implementing this approach, we achieved certified quasi–steady-state PCE 26.3% inverted PSCs; report retention ≥90% 1100 hours continuous 1-sun maximum point operation 85°C.

Language: Английский

Citations

54
Bandgap-universal passivation enables stable perovskite solar cells with low photovoltage loss DOI
Yen‐Hung Lin,

Vikram Vikram,

Fengning Yang

et al.

Science, Journal Year: 2024, Volume and Issue: 384(6697), P. 767 - 775

Published: May 16, 2024

The efficiency and longevity of metal-halide perovskite solar cells are typically dictated by nonradiative defect-mediated charge recombination. In this work, we demonstrate a vapor-based amino-silane passivation that reduces photovoltage deficits to around 100 millivolts (>90% the thermodynamic limit) in bandgaps between 1.6 1.8 electron volts, which is crucial for tandem applications. A primary-, secondary-, or tertiary-amino-silane alone negatively barely affected crystallinity transport, but amino-silanes incorporate primary secondary amines yield up 60-fold increase photoluminescence quantum preserve long-range conduction. Amino-silane-treated devices retained 95% power conversion more than 1500 hours under full-spectrum sunlight at 85°C open-circuit conditions ambient air with relative humidity 50 60%.

Language: Английский

Citations

51