Guanidinium Iodide-Modified PEDOT:PSS Hole Transport Layer for Improving the Performance of 2D Perovskite Solar Cells DOI
Xiang Chen, Fei Zheng,

Yanna Hou

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has been widely used as a hole transporting layer (HTL) in two-dimensional (2D) Ruddlesden-Popper perovskite (RPP)-based solar cells (2D-PSCs) due to its simple preparation process and low cost. However, the devices based on PEDOT:PSS exhibit efficiency poor stability number of buried interfacial defects, energy level mismatching, corrosivity HTL. In this study, guanidinium iodide (GAI)-modified HTL was adopted tune crystallization 2D RPPs, leading formation films with preferential crystal orientation, improved crystallinity, suppressed defect density. The addition GAI not only enhances conductivity intrinsic layers but also improves their matching those films. Upon doping into PEDOT:PSS, power conversion 2D-PSCs increased from 13.11% 16.04% maintained 80% initial value under 65% relative humidity condition for 60 days. This work demonstrates novel synergetic modification strategy gives new insight underlying mechanism, which should lead further improvements performance other optoelectronic RPPs.

Language: Английский

Guanidinium Iodide-Modified PEDOT:PSS Hole Transport Layer for Improving the Performance of 2D Perovskite Solar Cells DOI
Xiang Chen, Fei Zheng,

Yanna Hou

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has been widely used as a hole transporting layer (HTL) in two-dimensional (2D) Ruddlesden-Popper perovskite (RPP)-based solar cells (2D-PSCs) due to its simple preparation process and low cost. However, the devices based on PEDOT:PSS exhibit efficiency poor stability number of buried interfacial defects, energy level mismatching, corrosivity HTL. In this study, guanidinium iodide (GAI)-modified HTL was adopted tune crystallization 2D RPPs, leading formation films with preferential crystal orientation, improved crystallinity, suppressed defect density. The addition GAI not only enhances conductivity intrinsic layers but also improves their matching those films. Upon doping into PEDOT:PSS, power conversion 2D-PSCs increased from 13.11% 16.04% maintained 80% initial value under 65% relative humidity condition for 60 days. This work demonstrates novel synergetic modification strategy gives new insight underlying mechanism, which should lead further improvements performance other optoelectronic RPPs.

Language: Английский

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