Highly Soluble and Oxidizing Organic Salts Doped Hole‐Transporting Layer Enables Efficient and Stable Perovskite Solar Cells DOI Open Access
Xin Luo, Danpeng Gao, Daqing Zhang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

Abstract Chemical doping plays a crucial role in enhancing the charge transport and electrical conductivity of hole‐transporting layers (HTLs) perovskite solar cells (PSCs), leading to improved device performance stability. However, developing highly soluble oxidizing chemical dopants that ensure stable PSCs remains significant challenge. Herein, design synthesis novel organic radical cation salt, XD1 , comprising tris(4‐methoxyphenyl)aminium as bis(trifluoromethane)sulfonimide (TFSI⁻) anion, are reported. exhibits excellent solubility various solvents demonstrates strong oxidative capability, significantly boosting HTLs by three orders magnitude. Compared conventional like LiTFSI Magic Blue (MB), ‐doped Spiro‐OMeTAD films demonstrate superior characteristics, including enhanced compactness, uniformity, hydrophobicity. Remarkably, incorporating 2.0 mol% achieve maximum power conversion efficiency (PCE) 25.25%, surpassing 24.44% PCE LiTFSI‐doped cells. Particularly, unencapsulated with retain over 91% their initial after 1 000 h continuous one‐sun illumination at 85 °C an N₂ atmosphere. This work represents advancement development efficient for PSCs.

Language: Английский

Highly Soluble and Oxidizing Organic Salts Doped Hole‐Transporting Layer Enables Efficient and Stable Perovskite Solar Cells DOI Open Access
Xin Luo, Danpeng Gao, Daqing Zhang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

Abstract Chemical doping plays a crucial role in enhancing the charge transport and electrical conductivity of hole‐transporting layers (HTLs) perovskite solar cells (PSCs), leading to improved device performance stability. However, developing highly soluble oxidizing chemical dopants that ensure stable PSCs remains significant challenge. Herein, design synthesis novel organic radical cation salt, XD1 , comprising tris(4‐methoxyphenyl)aminium as bis(trifluoromethane)sulfonimide (TFSI⁻) anion, are reported. exhibits excellent solubility various solvents demonstrates strong oxidative capability, significantly boosting HTLs by three orders magnitude. Compared conventional like LiTFSI Magic Blue (MB), ‐doped Spiro‐OMeTAD films demonstrate superior characteristics, including enhanced compactness, uniformity, hydrophobicity. Remarkably, incorporating 2.0 mol% achieve maximum power conversion efficiency (PCE) 25.25%, surpassing 24.44% PCE LiTFSI‐doped cells. Particularly, unencapsulated with retain over 91% their initial after 1 000 h continuous one‐sun illumination at 85 °C an N₂ atmosphere. This work represents advancement development efficient for PSCs.

Language: Английский

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