Carrier Transport in Low‐Dimensional Tin Perovskite Solar Cells

Solar RRL, Journal Year: 2024, Volume and Issue: 8(10)

Published: March 23, 2024

Recently, the emerging of low‐dimensional tin perovskite solar cells (TPSCs) by introducing bulky organic spacers has attracted extensive attention. It can not only inhibit oxidation Sn 2+ , but also reduce ion migration and self‐doping effect. Thanks to these advantages, TPSCs have achieved an impressive power conversion efficiency (PCE) over 15% recently. However, introduction impedes carrier transport thus limits attainable PCE. Therefore, it is important understand carrier‐transport mechanism in develop more efficient stable TPSCs. In this review, latest progress summarized detail. First, characteristics perovskites are discussed. Then, strategies improve discussed, mainly from aspects crystal orientation, crystallization kinetics, defects, interface energy level alignment, quantum well effect, exciton binding energy. Finally, future challenges prospects expounded prepare high‐performance

Language: Английский

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Inorganic salts released from polypyrrole nanocapsules on compact TiO2 layer for highly efficient inorganic CsPbI3-type perovskite solar cells

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154845 - 154845

Published: Aug. 14, 2024

Language: Английский

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In Situ Observation and Control of Crystallization Dynamics for Stable and Efficient CsPbI₃-Based 2D Perovskite Solar Cells

ACS Applied Energy Materials, Journal Year: 2023, Volume and Issue: 6(20), P. 10205 - 10214

Published: March 13, 2023

Two-dimensional (2D) CsPbI3-based perovskites have shown great potential to tackle the chronic phase instability issue of their three-dimensional (3D) analogue owing steric hindrance introduced by bulky organic spacers. Herein, high-quality 2D perovskite films employing canonical butylammonium (BA) spacer are fabricated through synergistic thermodynamic and kinetic control crystallization process. We show that film preparation conditions solvent composition substrate temperature for spin-coating significantly affect quality resultant films. They rationalized scrutinizing formation mechanism in situ grazing-incidence X-ray diffraction investigations. The optimal growth endow with remarkable crystallographic optoelectronic properties. Solar cells made this exhibit a power conversion efficiency > 10% shelf stability over 160 days, while retaining 80% initial performance an operational min without any loss performance.

Language: Английский

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Improve Perovskite Solar Cell Stability and Efficiency via Multifunctional Multiple‐Ring Aromatic Dopant Passivation

Solar RRL, Journal Year: 2023, Volume and Issue: 7(13)

Published: May 11, 2023

Organic–inorganic perovskite solar cells, as a representative of the new generation have made satisfactory advancements in development over past few years. However, low carrier transport characteristics and energy loss brought on by defects severely restrict its development. This study develops liquid crystal material 1‐naphthalene acetic acid potassium salt (C 12 H 9 KO 2 , K‐NAA) dopant into MA 0.6 FA 0.4 PbI 3− x Cl material. The presence free K + ions K‐NAA modifies lattice gap, CO structure can efficiently passivate Pb 2+ defect caused absence coordination. Therefore, grain boundaries, which serve points moisture penetration become blurred, hence suppressing charge trapping/recombination centers enhancing film quality stability. naphthalene has conjugated multiple‐ring aromatic structure. abundant π ‐electron delocalization present benzene ring may provide an electron‐rich environment outside connected structure, resulting field‐effect passivation effectively performance. Hence, devices deliver champion power conversion efficiency (PCE) 19.86%. After 700 h under dark at 25 °C 30% humidity, optimized unencapsulated device PCE maintains 92% initial efficiency.

Language: Английский

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Photodetector Based on Two-dimensional Perovskite (PEA)₂PbI₄

Journal of Inorganic Materials, Journal Year: 2023, Volume and Issue: 38(9), P. 1069 - 1069

Published: Jan. 1, 2023

Language: Английский

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