{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1361137045443758336.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1021/cm4034929"}},{"identifier":{"@type":"URI","@value":"https://pubs.acs.org/doi/pdf/10.1021/cm4034929"}}],"dc:title":[{"@value":"A Series of Squaraine Dyes: Effects of Side Chain and the Number of Hydroxyl Groups on Material Properties and Photovoltaic Performance"}],"description":[{"notation":[{"@value":"Squaraine dyes are considered an important group of photoactive materials in the field of organic photovoltaic devices. In this work, we purposely tuned the side chains and number of hydroxyl (OH) groups in a series of squaraine (SQ) dyes, i.e., SQ1–4, to investigate the effect of structural variations on the material properties as well as the performance of these dyes as donor materials in bulk heterojunction (BHJ) photovoltaic cells. The material structure and properties of these SQs were systematically characterized using various tools. Solution-processed BHJ photovoltaic cells based on these SQ compounds combined with [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) as an acceptor gave efficient power conversion efficiencies greater than 4.0% under AM 1.5G solar illumination at 100 mW/cm2. Our observations show that the OH groups deepened the highest occupied molecular orbital (HOMO) of the donor and thus enhanced the open-circuit voltage, whereas the linear chain improved the charge transport prop..."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381137045443758337","@type":"Researcher","foaf:name":[{"@value":"Guo Chen"}],"jpcoar:affiliationName":[{"@value":"Department\rof Organic Device Engineering, Graduate School of Engineering, Research\rCenter for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137045443758340","@type":"Researcher","foaf:name":[{"@value":"Hisahiro Sasabe"}],"jpcoar:affiliationName":[{"@value":"Department\rof Organic Device Engineering, Graduate School of Engineering, Research\rCenter for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137045443758336","@type":"Researcher","foaf:name":[{"@value":"Yusuke Sasaki"}],"jpcoar:affiliationName":[{"@value":"Department\rof Organic Device Engineering, Graduate School of Engineering, Research\rCenter for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137045443758343","@type":"Researcher","foaf:name":[{"@value":"Hiroshi Katagiri"}],"jpcoar:affiliationName":[{"@value":"Department\rof Organic Device Engineering, Graduate School of Engineering, Research\rCenter for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137045443758338","@type":"Researcher","foaf:name":[{"@value":"Xiao-Feng Wang"}],"jpcoar:affiliationName":[{"@value":"Department\rof Organic Device Engineering, Graduate School of Engineering, Research\rCenter for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137045443758339","@type":"Researcher","foaf:name":[{"@value":"Takeshi Sano"}],"jpcoar:affiliationName":[{"@value":"Department\rof Organic Device Engineering, Graduate School of Engineering, Research\rCenter for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137045443758342","@type":"Researcher","foaf:name":[{"@value":"Ziruo Hong"}],"jpcoar:affiliationName":[{"@value":"Department\rof Organic Device Engineering, Graduate School of Engineering, Research\rCenter for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan"},{"@value":"Department\rof Materials Science and Engineering, University of California, Los Angeles, California 90095, United States"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137045443758341","@type":"Researcher","foaf:name":[{"@value":"Yang Yang"}],"jpcoar:affiliationName":[{"@value":"Department\rof Materials Science and Engineering, University of California, Los Angeles, California 90095, United States"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137045443758344","@type":"Researcher","foaf:name":[{"@value":"Junji Kido"}],"jpcoar:affiliationName":[{"@value":"Department\rof Organic Device Engineering, Graduate School of Engineering, Research\rCenter for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"08974756"},{"@type":"EISSN","@value":"15205002"}],"prism:publicationName":[{"@value":"Chemistry of Materials"}],"dc:publisher":[{"@value":"American Chemical Society (ACS)"}],"prism:publicationDate":"2014-01-16","prism:volume":"26","prism:number":"3","prism:startingPage":"1356","prism:endingPage":"1364"},"reviewed":"false","url":[{"@id":"https://pubs.acs.org/doi/pdf/10.1021/cm4034929"}],"createdAt":"2014-01-16","modifiedAt":"2023-04-17","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360004229881327232","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Strong Nonlinear Optical Response in the Visible Spectral Range with Epsilon‐Near‐Zero Organic Thin Films"}]},{"@id":"https://cir.nii.ac.jp/crid/1360021391871024640","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Squaraine dye/Ti3C2Tx MXene organic-inorganic hybrids for photocatalytic hydrogen evolution"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848658074594688","@type":"Article","resourceType":"学術雑誌論文(journal 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