The influence of the terminal acceptor and oligomer length on the photovoltaic properties of A–D–A small molecule donors

Four new A–D–A small molecules (denoted as FG1–4) have been designed and synthesized. The compounds have cyclopentadithiophene-vinylene (CPDTV) oligomers of different lengths as the central donor core linked with different terminal acceptor units (3-ethylrhodanine or dicyanomethylene-3-ethylrhodanin...

Descripción completa

Detalles Bibliográficos
Autores: García Guijarro, Fernando, Malhotra, Prateek, Gupta, Gaurav, Caballero Briceño, Rubén, Cruz, Pilar de la, Singhal, Rahul, Sharma, Ganesh Datt, Gómez-Escalonilla Romojaro, María José
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/28991
Acceso en línea:http://hdl.handle.net/10578/28991
Access Level:acceso abierto
Palabra clave:oligomer
photovoltaic properties
A–D–A small molecules
id ES_8ba8adc3f2de9d3eec69dacfa02ad675
oai_identifier_str oai:ruidera.uclm.es:10578/28991
network_acronym_str ES
network_name_str España
repository_id_str
spelling The influence of the terminal acceptor and oligomer length on the photovoltaic properties of A–D–A small molecule donorsGarcía Guijarro, FernandoMalhotra, PrateekGupta, GauravCaballero Briceño, RubénCruz, Pilar de laSinghal, RahulSharma, Ganesh DattGómez-Escalonilla Romojaro, María Joséoligomerphotovoltaic propertiesA–D–A small moleculesFour new A–D–A small molecules (denoted as FG1–4) have been designed and synthesized. The compounds have cyclopentadithiophene-vinylene (CPDTV) oligomers of different lengths as the central donor core linked with different terminal acceptor units (3-ethylrhodanine or dicyanomethylene-3-ethylrhodanine). The effects that conjugation length and terminal acceptor units have on the optical and electrochemical properties were investigated. These small molecules were used as donors in conjunction with PC71BM as an acceptor in the bulk heterojunction active layer for the fabrication of solution-processed organic solar cells. Solvent vapor annealing treatment improved the crystallinity and the interpenetrating networks of donor and acceptor phases for exciton dissociation and charge transfer, thus leading to significant improvements in the overall power conversion efficiency (PCE) of the organic solar cells. The PCE values for the organic solar cells based on the optimized FG1:PC71BM, FG2:PC71BM, FG3:PC71BM and FG4:PC71BM active layer were 5.58%, 6.99%, 7.51% and 8.43%, respectively. These results indicate that an enhancement in the PCE of small molecule organic solar cells can be achieved by an increase in conjugation-length and variation of terminal acceptor units in the molecular backbone of small molecules and optimization of the crystallinity and nanoscale interpenetrating morphology by appropriate solvent vapor annealing treatment.The Royal Society of Chemistry202120212020info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttp://hdl.handle.net/10578/28991reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésinfo:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/289912026-05-27T07:36:41Z
dc.title.none.fl_str_mv The influence of the terminal acceptor and oligomer length on the photovoltaic properties of A–D–A small molecule donors
title The influence of the terminal acceptor and oligomer length on the photovoltaic properties of A–D–A small molecule donors
spellingShingle The influence of the terminal acceptor and oligomer length on the photovoltaic properties of A–D–A small molecule donors
García Guijarro, Fernando
oligomer
photovoltaic properties
A–D–A small molecules
title_short The influence of the terminal acceptor and oligomer length on the photovoltaic properties of A–D–A small molecule donors
title_full The influence of the terminal acceptor and oligomer length on the photovoltaic properties of A–D–A small molecule donors
title_fullStr The influence of the terminal acceptor and oligomer length on the photovoltaic properties of A–D–A small molecule donors
title_full_unstemmed The influence of the terminal acceptor and oligomer length on the photovoltaic properties of A–D–A small molecule donors
title_sort The influence of the terminal acceptor and oligomer length on the photovoltaic properties of A–D–A small molecule donors
dc.creator.none.fl_str_mv García Guijarro, Fernando
Malhotra, Prateek
Gupta, Gaurav
Caballero Briceño, Rubén
Cruz, Pilar de la
Singhal, Rahul
Sharma, Ganesh Datt
Gómez-Escalonilla Romojaro, María José
author García Guijarro, Fernando
author_facet García Guijarro, Fernando
Malhotra, Prateek
Gupta, Gaurav
Caballero Briceño, Rubén
Cruz, Pilar de la
Singhal, Rahul
Sharma, Ganesh Datt
Gómez-Escalonilla Romojaro, María José
author_role author
author2 Malhotra, Prateek
Gupta, Gaurav
Caballero Briceño, Rubén
Cruz, Pilar de la
Singhal, Rahul
Sharma, Ganesh Datt
Gómez-Escalonilla Romojaro, María José
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv oligomer
photovoltaic properties
A–D–A small molecules
topic oligomer
photovoltaic properties
A–D–A small molecules
description Four new A–D–A small molecules (denoted as FG1–4) have been designed and synthesized. The compounds have cyclopentadithiophene-vinylene (CPDTV) oligomers of different lengths as the central donor core linked with different terminal acceptor units (3-ethylrhodanine or dicyanomethylene-3-ethylrhodanine). The effects that conjugation length and terminal acceptor units have on the optical and electrochemical properties were investigated. These small molecules were used as donors in conjunction with PC71BM as an acceptor in the bulk heterojunction active layer for the fabrication of solution-processed organic solar cells. Solvent vapor annealing treatment improved the crystallinity and the interpenetrating networks of donor and acceptor phases for exciton dissociation and charge transfer, thus leading to significant improvements in the overall power conversion efficiency (PCE) of the organic solar cells. The PCE values for the organic solar cells based on the optimized FG1:PC71BM, FG2:PC71BM, FG3:PC71BM and FG4:PC71BM active layer were 5.58%, 6.99%, 7.51% and 8.43%, respectively. These results indicate that an enhancement in the PCE of small molecule organic solar cells can be achieved by an increase in conjugation-length and variation of terminal acceptor units in the molecular backbone of small molecules and optimization of the crystallinity and nanoscale interpenetrating morphology by appropriate solvent vapor annealing treatment.
publishDate 2020
dc.date.none.fl_str_mv 2020
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10578/28991
url http://hdl.handle.net/10578/28991
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv The Royal Society of Chemistry
publisher.none.fl_str_mv The Royal Society of Chemistry
dc.source.none.fl_str_mv reponame:RUIdeRA. Repositorio Institucional de la UCLM
instname:Universidad de Castilla-La Mancha
instname_str Universidad de Castilla-La Mancha
reponame_str RUIdeRA. Repositorio Institucional de la UCLM
collection RUIdeRA. Repositorio Institucional de la UCLM
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869412840903802880
score 15.301629

Similares en LA Referencia