Hole transporting materials for perovskite solar cells and a simple approach for determining the performance limiting factors

The synthesis and characterization of three novel HTMs with different highest occupied molecular orbital (HOMO) energy levels and their performances in MAPbI3-based devices in comparison with Spiro-OMeTAD is reported. Without systematic optimization, the HTMs performed well. The devices delivered fi...

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Authors: Abudulimu, Abasi, Sandoval-Torrientes, Rafael, Zimmermann, Iwan, Santos Barahona, José Manuel, Khaja Nazeeruddin, Mohammad, Martín León, Nazario
Format: article
Publication Date:2019
Country:España
Institution:Universidad Complutense de Madrid (UCM)
Repository:Docta Complutense
Language:English
OAI Identifier:oai:docta.ucm.es:20.500.14352/93366
Online Access:https://hdl.handle.net/20.500.14352/93366
Access Level:Open access
Keyword:547
Electron energy levels
Hole mobility
Molecular orbitals
Open circuit voltage
Perovskite
Química orgánica (Química)
2306 Química Orgánica
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oai_identifier_str oai:docta.ucm.es:20.500.14352/93366
network_acronym_str ES
network_name_str España
repository_id_str
spelling Hole transporting materials for perovskite solar cells and a simple approach for determining the performance limiting factorsAbudulimu, AbasiSandoval-Torrientes, RafaelZimmermann, IwanSantos Barahona, José ManuelKhaja Nazeeruddin, MohammadMartín León, Nazario547Electron energy levelsHole mobilityMolecular orbitalsOpen circuit voltagePerovskiteQuímica orgánica (Química)2306 Química OrgánicaThe synthesis and characterization of three novel HTMs with different highest occupied molecular orbital (HOMO) energy levels and their performances in MAPbI3-based devices in comparison with Spiro-OMeTAD is reported. Without systematic optimization, the HTMs performed well. The devices delivered fill factors comparable to the one with Spiro-OMeTAD but suffered from short-circuit current. Interestingly, despite the significant differences in HOMO energy levels, all three HTMs generated the same open-circuit voltage (VOC). We explored the performance limiting factors of the HTMs by simple transient photovoltage/photocurrent (TPV/TPC) measurements along with Drift-diffusion simulations. We found no correlation between HOMO energy levels of the HTMs and VOC of the devices. Performances of the devices are limited by high trap density as well as low carrier mobility of the HTMs, and by the shunts present in the devices. Furthermore, the high trap density and low carrier mobility of the HTM are found to induce ion migration effect in the device causing slow decaying components in TPV/TPC . Nevertheless, it is confirmed that JSC and VOC, measured at steady state, are not influenced by the ion migration effect. These HTMs can be improved further by optimizing their conductivity, trap density, morphology, and can be used as alternatives to Spiro-OMeTAD or other expensive, synthetically challenging HTMs. The simple and inexpensive approach presented in this work can also be applied for effectively evaluating charge transporting materials for perovskite solar cellsRoyal Society of ChemistryUniversidad Complutense de Madrid20192019-01-0120192019-01-01journal articlehttp://purl.org/coar/resource_type/c_6501Phttp://purl.org/coar/version/c_fa2ee174bc00049finfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/93366reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/933662026-06-02T12:44:21Z
dc.title.none.fl_str_mv Hole transporting materials for perovskite solar cells and a simple approach for determining the performance limiting factors
title Hole transporting materials for perovskite solar cells and a simple approach for determining the performance limiting factors
spellingShingle Hole transporting materials for perovskite solar cells and a simple approach for determining the performance limiting factors
Abudulimu, Abasi
547
Electron energy levels
Hole mobility
Molecular orbitals
Open circuit voltage
Perovskite
Química orgánica (Química)
2306 Química Orgánica
title_short Hole transporting materials for perovskite solar cells and a simple approach for determining the performance limiting factors
title_full Hole transporting materials for perovskite solar cells and a simple approach for determining the performance limiting factors
title_fullStr Hole transporting materials for perovskite solar cells and a simple approach for determining the performance limiting factors
title_full_unstemmed Hole transporting materials for perovskite solar cells and a simple approach for determining the performance limiting factors
title_sort Hole transporting materials for perovskite solar cells and a simple approach for determining the performance limiting factors
dc.creator.none.fl_str_mv Abudulimu, Abasi
Sandoval-Torrientes, Rafael
Zimmermann, Iwan
Santos Barahona, José Manuel
Khaja Nazeeruddin, Mohammad
Martín León, Nazario
author Abudulimu, Abasi
author_facet Abudulimu, Abasi
Sandoval-Torrientes, Rafael
Zimmermann, Iwan
Santos Barahona, José Manuel
Khaja Nazeeruddin, Mohammad
Martín León, Nazario
author_role author
author2 Sandoval-Torrientes, Rafael
Zimmermann, Iwan
Santos Barahona, José Manuel
Khaja Nazeeruddin, Mohammad
Martín León, Nazario
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 547
Electron energy levels
Hole mobility
Molecular orbitals
Open circuit voltage
Perovskite
Química orgánica (Química)
2306 Química Orgánica
topic 547
Electron energy levels
Hole mobility
Molecular orbitals
Open circuit voltage
Perovskite
Química orgánica (Química)
2306 Química Orgánica
description The synthesis and characterization of three novel HTMs with different highest occupied molecular orbital (HOMO) energy levels and their performances in MAPbI3-based devices in comparison with Spiro-OMeTAD is reported. Without systematic optimization, the HTMs performed well. The devices delivered fill factors comparable to the one with Spiro-OMeTAD but suffered from short-circuit current. Interestingly, despite the significant differences in HOMO energy levels, all three HTMs generated the same open-circuit voltage (VOC). We explored the performance limiting factors of the HTMs by simple transient photovoltage/photocurrent (TPV/TPC) measurements along with Drift-diffusion simulations. We found no correlation between HOMO energy levels of the HTMs and VOC of the devices. Performances of the devices are limited by high trap density as well as low carrier mobility of the HTMs, and by the shunts present in the devices. Furthermore, the high trap density and low carrier mobility of the HTM are found to induce ion migration effect in the device causing slow decaying components in TPV/TPC . Nevertheless, it is confirmed that JSC and VOC, measured at steady state, are not influenced by the ion migration effect. These HTMs can be improved further by optimizing their conductivity, trap density, morphology, and can be used as alternatives to Spiro-OMeTAD or other expensive, synthetically challenging HTMs. The simple and inexpensive approach presented in this work can also be applied for effectively evaluating charge transporting materials for perovskite solar cells
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-01-01
2019
2019-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
P
http://purl.org/coar/version/c_fa2ee174bc00049f
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/93366
url https://hdl.handle.net/20.500.14352/93366
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869421747641516032
score 15,301603

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