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Updated: Jan 26, 2026
11:38
Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
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Electronic Structure of Nonionic Surfactant-Modified PEDOT:PSS and Its Application in Perovskite Solar Cells with
Dongguen Shin, Donghee Kang, Jae-Bok Lee
1Department of Physics , Kangwon National University , 1 Gangwondaehak-gil , Chuncheon-si , Gangwon-do 24341 , Republic of Korea.
ACS Applied Materials & Interfaces
|April 17, 2019
Summary
Adding Triton X-100 (TX) to PEDOT:PSS hole-transport layers significantly boosts perovskite solar cell (PSC) efficiency. This surfactant suppresses semimetallic properties, reducing interface recombination for improved power conversion efficiency (PCE).
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Interfacial properties critically influence exciton and charge-transport dynamics in perovskite solar cells (PSCs).
- Optimizing interfaces between perovskite and charge-transport layers is key to enhancing power conversion efficiency (PCE).
Purpose of the Study:
- To investigate the impact of Triton X-100 (TX) as an additive in the poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) hole-transport layer on PSC performance.
- To understand how TX modifies the electronic and surface properties of PEDOT:PSS and affects device characteristics.
Main Methods:
- Utilized ultraviolet/X-ray photoelectron spectroscopy and X-ray absorption spectroscopy to analyze the electronic structure of TX-modified PEDOT:PSS.
- Investigated electrical properties and photoluminescence to elucidate the mechanism behind performance improvements.
- Fabricated flexible PSCs using graphene electrodes and TX-modified PEDOT:PSS.
Main Results:
- TX additive significantly increased the TX content on the PEDOT:PSS surface, suppressing its semimetallic properties due to the insulating nature of TX.
- The modified PEDOT:PSS layer led to a significant increase in the PCE of methylammonium lead iodide (MAPbI3) PSCs.
- TX was found to inhibit interface recombination between PEDOT:PSS and MAPbI3.
Conclusions:
- Triton X-100 is an effective additive for improving PSC performance by modifying the PEDOT:PSS interface.
- Suppression of PEDOT:PSS semimetallic properties by TX mitigates interface recombination, enhancing device efficiency.
- Successful fabrication of flexible PSCs demonstrates the practical applicability of TX-modified PEDOT:PSS and graphene electrodes.
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