Impact of Incorporating Nitrogen Atoms in Naphthalenediimide-Based Polymer Acceptors on the Charge Generation, Device Performance, and Stability of All-Polymer Solar Cells
DC Field | Value | Language |
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dc.contributor.author | Kim, Sang Woo | - |
dc.contributor.author | Wang, Yang | - |
dc.contributor.author | You, Hoseon | - |
dc.contributor.author | Lee, Wonho | - |
dc.contributor.author | Michinobu, Tsuyoshi | - |
dc.contributor.author | Kim, Bumjoon J. | - |
dc.date.available | 2020-04-24T09:24:51Z | - |
dc.date.created | 2020-03-31 | - |
dc.date.issued | 2019-10-02 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/140 | - |
dc.description.abstract | Substitution of C atoms in a polymer backbone by N atoms allows for the facile tuning of the energy levels as well as the backbone conformation and packing structures of conjugated polymers. Herein, we report a series of three polymer acceptors (P(A)s) with N atoms introduced at different positions of the backbone and investigate how these N atoms affect the device performances of all-polymer solar cells(all-PSCs). The three P(A)s, namely, P(NDI2DT-BTT), P(NDI2DT-PTT), and P(NDI2DT-BTTz), are composed of naphthalenediimide (NDI)-based and benzothiadiazole (BT)-based derivatives (dithiophene-BT (BTT), dithiophene-thiadiazolepyridine (PTT), and dithiazole-BT (BTTz)). The PTT and BTTz units are synthesized by replacing the C atoms in BT and thiophene, respectively, with N atoms, which effectively tune the optical, electrochemical, and charge-transporting properties of the corresponding P(A)s. The all-PSCs using poly[(2,6-(4,8-bis(5-(2-ethylhexyl)thiophen-2-yl))benzo[1,2-b:4,5-b']dithiophene)-co-(1,3-di (5-thiophene-2-yl)-5,7-bis (2-ethylhexyl)benzo[1,2-c:4,5-c']dithiophene-4,8-dione)] (PBDB-T) as a polymer donor and P(NDI2DT-PTT) as P-A exhibit a significantly enhanced power conversion efficiency (PCE) of 6.95%, whereas the all-PSCs based on the other P(A)s show relatively lower PCEs (6.02% for PBDB-T:P(NDI2DT-BTT) and 1.43% for PBDB-T:P(NDI2DT-BTTz)). The high PCE of the PBDB-T:P(NDI2DT-PTT) device is due to the superior charge transfer and charge dissociation, resulting from the closely matched energy levels between PBDB-T and P(NDI2DT-PTT), as well as a more favorable bulk heterojunction morphology with improved miscibility. Importantly, the P(NDI2DT-PTT)-based all-PSC device shows improved air stability compared to the P(NDI2DT-BTT)-based device, which is most likely due to a decreased lowest unoccupied molecular orbital level of the P-A. Our findings suggest that the incorporation of N atoms into the P(A)s is an effective strategy for improving the efficiency and stability of all-PSCs. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | POWER CONVERSION EFFICIENCY | - |
dc.subject | FIELD-EFFECT TRANSISTORS | - |
dc.subject | THIN-FILM TRANSISTORS | - |
dc.subject | PHOTOVOLTAIC PERFORMANCE | - |
dc.subject | MOLECULAR-ORIENTATION | - |
dc.subject | CONJUGATED POLYMERS | - |
dc.subject | FULLERENE-POLYMER | - |
dc.subject | ELECTRON-MOBILITY | - |
dc.subject | DONOR | - |
dc.subject | FLUORINATION | - |
dc.title | Impact of Incorporating Nitrogen Atoms in Naphthalenediimide-Based Polymer Acceptors on the Charge Generation, Device Performance, and Stability of All-Polymer Solar Cells | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Wonho | - |
dc.identifier.doi | 10.1021/acsami.9b12037 | - |
dc.identifier.scopusid | 2-s2.0-85072849132 | - |
dc.identifier.wosid | 000489001900043 | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.11, no.39, pp.35896 - 35903 | - |
dc.relation.isPartOf | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 11 | - |
dc.citation.number | 39 | - |
dc.citation.startPage | 35896 | - |
dc.citation.endPage | 35903 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | POWER CONVERSION EFFICIENCY | - |
dc.subject.keywordPlus | FIELD-EFFECT TRANSISTORS | - |
dc.subject.keywordPlus | THIN-FILM TRANSISTORS | - |
dc.subject.keywordPlus | PHOTOVOLTAIC PERFORMANCE | - |
dc.subject.keywordPlus | MOLECULAR-ORIENTATION | - |
dc.subject.keywordPlus | CONJUGATED POLYMERS | - |
dc.subject.keywordPlus | FULLERENE-POLYMER | - |
dc.subject.keywordPlus | ELECTRON-MOBILITY | - |
dc.subject.keywordPlus | DONOR | - |
dc.subject.keywordPlus | FLUORINATION | - |
dc.subject.keywordAuthor | all-polymer solar cells | - |
dc.subject.keywordAuthor | naphthalenediimide (NDI) | - |
dc.subject.keywordAuthor | polymer acceptor | - |
dc.subject.keywordAuthor | nitrogen atom | - |
dc.subject.keywordAuthor | charge generation | - |
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