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Excitation Density Dependent Photoluminescence Quenching and Charge Transfer Efficiencies in Hybrid Perovskite/Organic Semiconductor Bilayers

Jinhyun Kim, Robert Godin, Stoichko Dimitrov Orcid Logo, Tian Du, Daniel Bryant, Martyn A. McLachlan, James Durrant Orcid Logo

Advanced Energy Materials, Start page: 1802474

Swansea University Authors: Stoichko Dimitrov Orcid Logo, James Durrant Orcid Logo

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DOI (Published version): 10.1002/aenm.201802474

Abstract

This study addresses the dependence of charge transfer efficiency between bilayers of methylammonium lead iodide (MAPI3) with PC61BM or poly(3,4‐ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS) charge transfer layers on excitation intensity. It analyzes the kinetic competition between inte...

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Published in: Advanced Energy Materials
ISSN: 1614-6832
Published: 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa45502
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first_indexed 2018-11-08T14:21:58Z
last_indexed 2019-01-08T19:58:36Z
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spelling 2019-01-08T17:04:11.4230123 v2 45502 2018-11-08 Excitation Density Dependent Photoluminescence Quenching and Charge Transfer Efficiencies in Hybrid Perovskite/Organic Semiconductor Bilayers 9fc26ec1b8655cd0d66f7196a924fe14 0000-0002-1564-7080 Stoichko Dimitrov Stoichko Dimitrov true false f3dd64bc260e5c07adfa916c27dbd58a 0000-0001-8353-7345 James Durrant James Durrant true false 2018-11-08 EEN This study addresses the dependence of charge transfer efficiency between bilayers of methylammonium lead iodide (MAPI3) with PC61BM or poly(3,4‐ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS) charge transfer layers on excitation intensity. It analyzes the kinetic competition between interfacial electron/hole transfer and charge trapping and recombination within MAPI3 by employing a range of optical measurements including steady‐state (SS) photoluminescence quenching (PLQ), and transient photoluminescence and absorption over a broad range of excitation densities. The results indicate that PLQ measurements with a typical photoluminescence spectrometer can yield significantly different transfer efficiencies to those measured under 1 Sun irradiation. Steady‐state and pulsed measurements indicate low transfer efficiencies at low excitation conditions (<5E + 15 cm−3) due to rapid charge trapping and low transfer efficiencies at high excitation conditions (>5E + 17 cm−3) due to fast bimolecular recombination. Efficient transfer to PC61BM or PEDOT:PSS is only observed under intermediate excitation conditions (≈1 Sun irradiation) where electron and hole transfer times are determined to be 36 and 11 ns, respectively. The results are discussed in terms of their relevance to the excitation density dependence of device photocurrent generation, impact of charge trapping on this dependence, and appropriate methodologies to determine charge transfer efficiencies relevant to device performance. Journal Article Advanced Energy Materials 1802474 1614-6832 31 12 2018 2018-12-31 10.1002/aenm.201802474 COLLEGE NANME Engineering COLLEGE CODE EEN Swansea University 2019-01-08T17:04:11.4230123 2018-11-08T10:53:34.8571871 Jinhyun Kim 1 Robert Godin 2 Stoichko Dimitrov 0000-0002-1564-7080 3 Tian Du 4 Daniel Bryant 5 Martyn A. McLachlan 6 James Durrant 0000-0001-8353-7345 7 0045502-09112018110916.pdf kim2018.pdf 2018-11-09T11:09:16.6200000 Output 9515655 application/pdf Accepted Manuscript true 2019-10-23T00:00:00.0000000 true eng
title Excitation Density Dependent Photoluminescence Quenching and Charge Transfer Efficiencies in Hybrid Perovskite/Organic Semiconductor Bilayers
spellingShingle Excitation Density Dependent Photoluminescence Quenching and Charge Transfer Efficiencies in Hybrid Perovskite/Organic Semiconductor Bilayers
Stoichko Dimitrov
James Durrant
title_short Excitation Density Dependent Photoluminescence Quenching and Charge Transfer Efficiencies in Hybrid Perovskite/Organic Semiconductor Bilayers
title_full Excitation Density Dependent Photoluminescence Quenching and Charge Transfer Efficiencies in Hybrid Perovskite/Organic Semiconductor Bilayers
title_fullStr Excitation Density Dependent Photoluminescence Quenching and Charge Transfer Efficiencies in Hybrid Perovskite/Organic Semiconductor Bilayers
title_full_unstemmed Excitation Density Dependent Photoluminescence Quenching and Charge Transfer Efficiencies in Hybrid Perovskite/Organic Semiconductor Bilayers
title_sort Excitation Density Dependent Photoluminescence Quenching and Charge Transfer Efficiencies in Hybrid Perovskite/Organic Semiconductor Bilayers
author_id_str_mv 9fc26ec1b8655cd0d66f7196a924fe14
f3dd64bc260e5c07adfa916c27dbd58a
author_id_fullname_str_mv 9fc26ec1b8655cd0d66f7196a924fe14_***_Stoichko Dimitrov
f3dd64bc260e5c07adfa916c27dbd58a_***_James Durrant
author Stoichko Dimitrov
James Durrant
author2 Jinhyun Kim
Robert Godin
Stoichko Dimitrov
Tian Du
Daniel Bryant
Martyn A. McLachlan
James Durrant
format Journal article
container_title Advanced Energy Materials
container_start_page 1802474
publishDate 2018
institution Swansea University
issn 1614-6832
doi_str_mv 10.1002/aenm.201802474
document_store_str 1
active_str 0
description This study addresses the dependence of charge transfer efficiency between bilayers of methylammonium lead iodide (MAPI3) with PC61BM or poly(3,4‐ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS) charge transfer layers on excitation intensity. It analyzes the kinetic competition between interfacial electron/hole transfer and charge trapping and recombination within MAPI3 by employing a range of optical measurements including steady‐state (SS) photoluminescence quenching (PLQ), and transient photoluminescence and absorption over a broad range of excitation densities. The results indicate that PLQ measurements with a typical photoluminescence spectrometer can yield significantly different transfer efficiencies to those measured under 1 Sun irradiation. Steady‐state and pulsed measurements indicate low transfer efficiencies at low excitation conditions (<5E + 15 cm−3) due to rapid charge trapping and low transfer efficiencies at high excitation conditions (>5E + 17 cm−3) due to fast bimolecular recombination. Efficient transfer to PC61BM or PEDOT:PSS is only observed under intermediate excitation conditions (≈1 Sun irradiation) where electron and hole transfer times are determined to be 36 and 11 ns, respectively. The results are discussed in terms of their relevance to the excitation density dependence of device photocurrent generation, impact of charge trapping on this dependence, and appropriate methodologies to determine charge transfer efficiencies relevant to device performance.
published_date 2018-12-31T03:57:18Z
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score 11.013731

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