Reversible structural transformation and enhanced performance of PEDOT:PSS-based hybrid solar cells driven by light intensity

Joseph Palathinkal Thomas; Saurabh Srivastava; Liyan Zhao; Marwa Abd-Ellah; Donald McGillivray; Jung Soo Kang; Md Anisur Rahman; Nafiseh Moghimi; Nina F. Heinig; Kam Tong Leung

doi:10.1021/acsami.5b01252

Reversible structural transformation and enhanced performance of PEDOT:PSS-based hybrid solar cells driven by light intensity

Joseph Palathinkal Thomas, Saurabh Srivastava, Liyan Zhao, Marwa Abd-Ellah, Donald McGillivray, Jung Soo Kang, Md Anisur Rahman, Nafiseh Moghimi, Nina F. Heinig, Kam Tong Leung

Chemistry

University of Waterloo

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

Abstract

Hybrid solar cells made of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and appropriate amounts of a cosolvent and a fluorosurfactant on planar n-type silicon substrates showed a photoconversion efficiency (PCE) of above 13%. These cells also exhibited stable, reproducible, and high external quantum efficiency (EQE) that was not sensitive to light-bias intensity (LBI). In contrast, solar cells made of pristine PEDOT:PSS showed low PCE and high EQE only under certain measurement conditions. The EQE was found to degrade with increasing LBI. Here we report that the LBI-sensitive variation of EQE of the low-PCE cells is related to a reversible structural transformation from a quinoid to a benzoid structure of PEDOT.

Original language	British English
Pages (from-to)	7466-7470
Number of pages	5
Journal	ACS Applied Materials and Interfaces
Volume	7
Issue number	14
DOIs	https://doi.org/10.1021/acsami.5b01252
State	Published - 15 Apr 2015

Keywords

external quantum efficiency
hybrid solar cell
light-bias intensity
PEDOT:PSS
structure stabilization

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1021/acsami.5b01252

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Thomas, J. P., Srivastava, S., Zhao, L., Abd-Ellah, M., McGillivray, D., Kang, J. S., Rahman, M. A., Moghimi, N., Heinig, N. F., & Leung, K. T. (2015). Reversible structural transformation and enhanced performance of PEDOT:PSS-based hybrid solar cells driven by light intensity. ACS Applied Materials and Interfaces, 7(14), 7466-7470. https://doi.org/10.1021/acsami.5b01252

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abstract = "Hybrid solar cells made of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and appropriate amounts of a cosolvent and a fluorosurfactant on planar n-type silicon substrates showed a photoconversion efficiency (PCE) of above 13%. These cells also exhibited stable, reproducible, and high external quantum efficiency (EQE) that was not sensitive to light-bias intensity (LBI). In contrast, solar cells made of pristine PEDOT:PSS showed low PCE and high EQE only under certain measurement conditions. The EQE was found to degrade with increasing LBI. Here we report that the LBI-sensitive variation of EQE of the low-PCE cells is related to a reversible structural transformation from a quinoid to a benzoid structure of PEDOT.",

keywords = "external quantum efficiency, hybrid solar cell, light-bias intensity, PEDOT:PSS, structure stabilization",

author = "Thomas, {Joseph Palathinkal} and Saurabh Srivastava and Liyan Zhao and Marwa Abd-Ellah and Donald McGillivray and Kang, {Jung Soo} and Rahman, {Md Anisur} and Nafiseh Moghimi and Heinig, {Nina F.} and Leung, {Kam Tong}",

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doi = "10.1021/acsami.5b01252",

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AU - Thomas, Joseph Palathinkal

AU - Srivastava, Saurabh

AU - Zhao, Liyan

AU - Abd-Ellah, Marwa

AU - McGillivray, Donald

AU - Kang, Jung Soo

AU - Rahman, Md Anisur

AU - Moghimi, Nafiseh

AU - Heinig, Nina F.

AU - Leung, Kam Tong

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AB - Hybrid solar cells made of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and appropriate amounts of a cosolvent and a fluorosurfactant on planar n-type silicon substrates showed a photoconversion efficiency (PCE) of above 13%. These cells also exhibited stable, reproducible, and high external quantum efficiency (EQE) that was not sensitive to light-bias intensity (LBI). In contrast, solar cells made of pristine PEDOT:PSS showed low PCE and high EQE only under certain measurement conditions. The EQE was found to degrade with increasing LBI. Here we report that the LBI-sensitive variation of EQE of the low-PCE cells is related to a reversible structural transformation from a quinoid to a benzoid structure of PEDOT.

KW - external quantum efficiency

KW - hybrid solar cell

KW - light-bias intensity

KW - PEDOT:PSS

KW - structure stabilization

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IS - 14

ER -

Reversible structural transformation and enhanced performance of PEDOT:PSS-based hybrid solar cells driven by light intensity

Abstract

Keywords

UN SDGs

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