Tetrapodal Hole‐Collecting Monolayer Materials Based on Saddle‐Like Cyclooctatetraene Core for Inverted Perovskite Solar Cells

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(46)

Published: Aug. 8, 2024

Abstract Hole‐collecting monolayers have greatly advanced the development of positive‐intrinsic‐negative perovskite solar cells (p‐i‐n PSCs). To date, however, most anchoring groups in reported monolayer materials are designed to bind transparent conductive oxide (TCO) surface, resulting less availability for other functions such as tuning wettability surface. In this work, we developed two anchorable molecules, 4PATTI‐C3 and 4PATTI‐C4 , by employing a saddle‐like indole‐fused cyclooctatetraene π‐core with four phosphonic acid linked through propyl or butyl chains. Both molecules form on TCO substrates. Thanks saddle shape skeleton, were found point upward, hydrophilic surfaces. Compared devices using hole‐collecting monolayer, ‐based exhibit faster hole‐collection process, leading higher power conversion efficiencies up 21.7 % 21.4 mini‐cell (0.1 cm 2 ) mini‐module (1.62 ), respectively, together good operational stability. This work represents how structural modification multipodal could substantially modulate after being adsorbed onto

Language: Английский

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Development of Lightweight and Flexible Perovskite Solar Cells on Ultrathin Colorless Polyimide Foils

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(36), P. 48676 - 48684

Published: Aug. 27, 2024

The development of Perovskite Solar Cells (PSCs) on flexible substrates marks a significant advancement in thin-film photovoltaic technology. However, current state-of-the-art research predominantly utilizes Poly(ethylene terephthalate) (PET) substrate, which limits the deployment to less challenging environments. To address this limitation, we explore fabrication inverted PSCs colorless polyimide (CPI) that can withstand harsh environmental conditions. We employed sequential sputtering technique deposit indium tin oxide (bottom electrode) and nickel (hole transport layer) as base stack for perovskite. This layer was further enhanced by incorporating MeO-2PACz into hole bilayer, significantly improving NiO

Language: Английский

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Chlorine-Substituent Regulation in Dopant-Free Small-Molecule Hole-Transport Materials Improves the Efficiency and Stability of Inverted Perovskite Solar Cells

Transactions of Tianjin University, Journal Year: 2024, Volume and Issue: 30(4), P. 314 - 323

Published: July 19, 2024

Abstract Although doped hole-transport materials (HTMs) offer an efficiency benefit for perovskite solar cells (PSCs), they inevitably diminish the stability. Here, we describe use of various chlorinated small molecules, specifically fluorenone-triphenylamine (FO-TPA)- x -Cl [ = para, meta, and ortho ( p , m o )], with different chlorine-substituent positions, as dopant-free HTMs PSCs. These molecules feature a symmetrical donor–acceptor–donor structure ideal intramolecular charge transfer properties, allowing self-doping establishment built-in potentials improving extraction. Highly efficient hole-transfer interfaces are constructed between perovskites these by strategically modifying chlorine substitution. Thus, HTM-derived inverted PSCs exhibited superior efficiencies air stabilities. Importantly, HTM FO-TPA- not only attains power conversion 20.82% but also demonstrates exceptional stability, retaining 93.8% its initial even after 30-day aging test conducted under ambient conditions in without encapsulation. findings underscore critical role regulation ensuring formation maintenance stable

Language: Английский

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Self-Assembled Monolayer-based Hole Transporting Materials for Invert Perovskite Solar Cells

Published: March 6, 2024

Language: Английский

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Future optoelectronics unlocked by ‘doping’ strategy

Nature, Journal Year: 2024, Volume and Issue: 633(8029), P. 291 - 292

Published: Sept. 11, 2024

Language: Английский

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