DC Field | Value | Language |
---|---|---|
dc.contributor.author | Singh, Ranbir | - |
dc.contributor.author | Suranagi, Sanjaykumar R. | - |
dc.contributor.author | Lee, Jaewon | - |
dc.contributor.author | Lee, Hansol | - |
dc.contributor.author | Kim, Min | - |
dc.contributor.author | Cho, Kilwon | - |
dc.date.accessioned | 2018-06-15T05:50:47Z | - |
dc.date.available | 2018-06-15T05:50:47Z | - |
dc.date.created | 2018-03-22 | - |
dc.date.issued | 2018-02 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/50905 | - |
dc.description.abstract | Herein we report a comparative morphological analysis of the perylene diimide (PDI)-and fullerene-based organic solar cells (OSCs) to identify the factors responsible for low performance of PDI-based devices. A PDI derivative, bis-PDI, and a fullerene derivative, PC70BM, are mixed with an efficient polymer donor, PffBT4T-2OD. The large disparity in power conversion efficiencies (PCEs) of OSCs composed of PffBT4T-2OD: bis-PDI (PCE = 5.18%) and PffBT4T-2OD: PC70BM (PCE = 10.19%) observed are attributed to differences in the nanostructural motif of bulk heterojunction (BHJ) morphologies of these blend systems. The X-ray scattering and surface energy characterizations revealed that the structurally dissimilar bis-PDI and PC70BM molecules determine the variation in blend film morphologies, and in particular, the molecular packing features of the donor PffBT4T-2OD polymer. In addition, high-resolution transmission electron microscopy (HRTEM) images explore the BHJ morphologies and presence of longer polymer fibrils in PffBT4T-2OD: bis-PDI system, justifying the unbalanced charge transport and high hole mobility. The low performance of PffBT4T-2OD: bis-PDI devices was further investigated by studying charge carrier recombination dynamics by using lightintensity- dependent and transient photovoltage (TPV) experiments. Furthermore, the temperature-dependent experiments showed the photovoltaic properties, including charge recombination losses, are strongly affected by energetic disorder present in bis-PDI-based system. | - |
dc.language | English | - |
dc.publisher | Nature Publishing Group | - |
dc.relation.isPartOf | Scientific Reports | - |
dc.title | Unraveling the efficiency-limiting morphological issues of the perylene diimide-based non-fullerene organic solar cells | - |
dc.type | Article | - |
dc.identifier.doi | 10.1038/s41598-018-21162-x | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | Scientific Reports, v.8, no.1 | - |
dc.identifier.wosid | 000424743500065 | - |
dc.date.tcdate | 2019-02-01 | - |
dc.citation.number | 1 | - |
dc.citation.title | Scientific Reports | - |
dc.citation.volume | 8 | - |
dc.contributor.affiliatedAuthor | Lee, Hansol | - |
dc.contributor.affiliatedAuthor | Cho, Kilwon | - |
dc.identifier.scopusid | 2-s2.0-85042061076 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 2 | - |
dc.description.isOpenAccess | Y | - |
dc.type.docType | Article | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
library@postech.ac.kr Tel: 054-279-2548
Copyrights © by 2017 Pohang University of Science ad Technology All right reserved.