Interfacial Proton Precompensation: Suppressing Deprotonation‐Driven Lattice Collapse for Enhanced Efficiency and Stability in Perovskite Solar Cells DOI
Bingying Xu, Guozhen Liu, Pengfei Wang

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 12, 2024

Abstract The chemical property of the buried interface plays a crucial role in improving performance and stability perovskite solar cells (PSCs). SnO 2 /perovskite prepared from alkaline hydrogel with high proton affinity triggers directional migration irreversible reactions protons, exacerbating disintegration crystal. In this study, we proposed precompensation strategy to suppress deprotonation effect improve durability devices. By modulating environment surface energy state interface, domain‐limiting spontaneous compensation protons formamidinium (FA + ) under coulomb force were achieved, thereby stabilizing crystal structure. target films UV illumination heating at 85 °C was significantly enhanced. As result, devices can retain around 90 % their initial power conversion efficiency (PCE) after 1000 h continuous irradiation maximum point (MPP). Moreover, due reduction defect content improvement conductivity carrier mobility by treatment, interfacial loss non‐radiative recombination substantially diminished. PSC exhibited much higher PCE 25.55 than control (23.03 %).

Language: Английский

Interfacial Proton Precompensation: Suppressing Deprotonation‐Driven Lattice Collapse for Enhanced Efficiency and Stability in Perovskite Solar Cells DOI
Bingying Xu, Guozhen Liu, Pengfei Wang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 12, 2024

Abstract The chemical property of the buried interface plays a crucial role in improving performance and stability perovskite solar cells (PSCs). SnO 2 /perovskite prepared from alkaline hydrogel with high proton affinity triggers directional migration irreversible reactions protons, exacerbating disintegration crystal. In this study, we proposed precompensation strategy to suppress deprotonation effect improve durability devices. By modulating environment surface energy state interface, domain‐limiting spontaneous compensation protons formamidinium (FA + ) under coulomb force were achieved, thereby stabilizing crystal structure. target films UV illumination heating at 85 °C was significantly enhanced. As result, devices can retain around 90 % their initial power conversion efficiency (PCE) after 1000 h continuous irradiation maximum point (MPP). Moreover, due reduction defect content improvement conductivity carrier mobility by treatment, interfacial loss non‐radiative recombination substantially diminished. PSC exhibited much higher PCE 25.55 than control (23.03 %).

Language: Английский

Citations

1
Charged defect management for high-efficiency planar solar cells: Reducing charge recombination and open-circuit voltage loss by employing donor-acceptor molecules to regulate perovskite electronic properties DOI
Miao Yu,

Lin Fan,

Lixue Wang

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 159035 - 159035

Published: Dec. 1, 2024

Language: Английский

Citations

1
In‐Situ Cross‐Linked Polymers for Enhanced Thermal Cycling Stability in Flexible Perovskite Solar Cells DOI
Zhihao Li, Chunmei Jia,

Hongzhuo Wu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 30, 2024

Abstract Flexible perovskite solar cells (FPSCs) are a promising emerging photovoltaic technology, with certified power conversion efficiencies reaching 24.9 %. However, the frequent occurrence of grain fractures and interface delamination raises concerns about their ability to endure mechanical stresses caused by temperature fluctuations. In this study, we employ an in situ polymerization molecule extended functional end groups preserve integrity during thermal cycling. The AMPS‐DEA chemically anchors boundaries cross‐links neighboring grains, protecting structure from stress accumulation. Additionally, its hydroxyl form bidentate chelation SnO 2 , enhancing interfacial adhesion preventing delamination. More importantly, relaxed residual provided allows layer adapt changes, effectively matching adjacent layers failure. Our findings demonstrate that modification not only boosts PCE 25.78 % rigid PSCs 24.54 flexible but also improves stability, maintaining over 95 efficiency after 10,000 bending cycles 200 cycles.

Language: Английский

Citations

1
A Review on Pulsed Laser Preparation of Quantum Dots in Colloids for the Optimization of Perovskite Solar Cells: Advantages, Challenges, and Prospects DOI Creative Commons
Liang Sun, Yang Li, Jiujiang Yan

et al.

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(19), P. 1550 - 1550

Published: Sept. 25, 2024

In recent years, academic research on perovskite solar cells (PSCs) has attracted remarkable attention, and one of the most crucial issues is promoting power conversion efficiency (PCE) operational stability PSCs. Generally, modification electron or hole transport layers between electrodes via surface engineering considered an effective strategy because inherent structural defects charge carrier can be reshaped modified by adopting functional nanomaterials, thus recombination rate naturally decreased. At present, large amounts available nanomaterials for films are extensively investigated, mainly including nanocrystals, nanorods, nanoarrays, even colloidal quantum dots (QDs). particular, as unique size-dependent diverse properties QDs different from other such their confinement effects, quantum-tunable which display great potential in PCE PSCs carriers effectively tuned these effects. However, preparing with a neat desirable size remains technical difficulty, though present chemical highly advanced. Fortunately, rapid advances laser technology have provided new insight into precise preparation QDs. this review, we introduce approach QDs, namely pulsed irradiation colloids (PLIC), briefly highlight innovative works PLIC-prepared optimization This review not only highlights advantages PLIC QD but also critically points out challenges prospects QD-based

Language: Английский

Citations

0
Interfacial Proton Precompensation: Suppressing Deprotonation‐Driven Lattice Collapse for Enhanced Efficiency and Stability in Perovskite Solar Cells DOI
Bingying Xu, Guozhen Liu, Pengfei Wang

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 12, 2024

Abstract The chemical property of the buried interface plays a crucial role in improving performance and stability perovskite solar cells (PSCs). SnO 2 /perovskite prepared from alkaline hydrogel with high proton affinity triggers directional migration irreversible reactions protons, exacerbating disintegration crystal. In this study, we proposed precompensation strategy to suppress deprotonation effect improve durability devices. By modulating environment surface energy state interface, domain‐limiting spontaneous compensation protons formamidinium (FA + ) under coulomb force were achieved, thereby stabilizing crystal structure. target films UV illumination heating at 85 °C was significantly enhanced. As result, devices can retain around 90 % their initial power conversion efficiency (PCE) after 1000 h continuous irradiation maximum point (MPP). Moreover, due reduction defect content improvement conductivity carrier mobility by treatment, interfacial loss non‐radiative recombination substantially diminished. PSC exhibited much higher PCE 25.55 than control (23.03 %).

Language: Английский

Citations

0