Effect of Alkyl Side Chains in BDT and 2D-BDT Small-Molecules as Donor Materials for Vacuum-Processed Organic Photovoltaic Devices

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dc.article.number2400747
dc.catalogadorpva
dc.contributor.authorAntoine Ortiz, Cristian Miguel Luis
dc.contributor.authorVilches Astudillo, Diego Pablo
dc.contributor.authorPreuss, Paulo
dc.contributor.authorÁngel Figueroa, Felipe Alfonso
dc.date.accessioned2024-08-19T17:33:18Z
dc.date.available2024-08-19T17:33:18Z
dc.date.issued2024
dc.description.abstractNine molecules based on benzo[1,2-b:4,5-b ']dithiophene (BDT) and 2D-BDT derivatives are studied as donor materials in organic photovoltaic (OPV) devices fabricated by thermal evaporation, aiming to understand how different alkyl lateral substituents affect the molecular packing, the charge transport, and, subsequently, the device performance. Synthesis of the molecules is followed by a comprehensive characterization using thermal and differential scanning calorimetry analyses, which confirm their thermal stability and suitability for vacuum-processed OPV devices. Thermal analysis also demonstrates a strong correlation between the melting point reduction of the molecules and the disorder caused by the alkyl chains. As the synthesized molecules present similar optical properties, the differences in the device performance are caused by the different substituents. BDT derivatives with low melting point temperatures produce reduced current density, hole mobility, and overall device performance, which are attributed to poor molecular packing. Additionally, energy-dispersive X-ray spectroscopy analysis suggests phase separation with fullerene, further impacting the efficiency of the devices. The findings indicate that the photovoltaic performance of BDT-based molecules can be modulated by avoiding aliphatic substituents, providing a strategy for the design of more efficient materials, with thermal evaporation as an ideal method to evaluate and decouple molecular packing from solubility.
dc.fuente.origenWOS
dc.identifier.doi10.1002/ente.202400747
dc.identifier.eissn2194-4296
dc.identifier.issn2194-4288
dc.identifier.urihttps://doi.org/10.1002/ente.202400747
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/87504
dc.identifier.wosidWOS:001280620300001
dc.information.autorucEscuela de Química; Antoine Ortiz, Cristian Miguel Luis; S/I; 1046825
dc.information.autorucEscuela de Química; Vilches Astudillo, Diego Pablo; 0000-0001-6345-2600; 1046833
dc.information.autorucEscuela de Química; Ángel Figueroa, Felipe Alfonso; 0000-0002-5099-3034; 142007
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final9
dc.pagina.inicio1
dc.publisherWILEY-V C H VERLAG GMBH
dc.revistaEnergy Technology
dc.rightsacceso restringido
dc.subjectAlkyl substituents
dc.subjectBenzo[1,2-b:4,5-b ']dithiophene
dc.subjectOrganic photovoltaics
dc.subjectVacuum-processed
dc.subject.ddc600
dc.subject.deweyTecnologíaes_ES
dc.subject.ods09 Industry, innovation and infrastructure
dc.subject.ods07 Affordable and clean energy
dc.subject.odspa09 Industria, innovación e infraestructura
dc.subject.odspa07 Energía asequible y no contaminante
dc.titleEffect of Alkyl Side Chains in BDT and 2D-BDT Small-Molecules as Donor Materials for Vacuum-Processed Organic Photovoltaic Devices
dc.typeartículo
sipa.codpersvinculados1046825
sipa.codpersvinculados1046833
sipa.codpersvinculados142007
sipa.trazabilidadWOS;2024-08-17
sipa.trazabilidadORCID;2024-08-19
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