Side-Chain Engineering of Diketopyrrolopyrrole-Based Hole-Transport Materials to Realize High-Efficiency Perovskite Solar Cells
DC Field | Value | Language |
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dc.contributor.author | Sharma, Amit | - |
dc.contributor.author | Singh, Ranbir | - |
dc.contributor.author | Kini, Gururaj P. | - |
dc.contributor.author | Kim, Ji Hyeon | - |
dc.contributor.author | Parashar, Mritunjaya | - |
dc.contributor.author | Kim, Min | - |
dc.contributor.author | Kumar, Manish | - |
dc.contributor.author | Kim, Jong Seung | - |
dc.contributor.author | Lee, Jae-Joon | - |
dc.date.accessioned | 2021-08-30T02:58:05Z | - |
dc.date.available | 2021-08-30T02:58:05Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2021-02-17 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/49563 | - |
dc.description.abstract | The design and synthesis of a stable and efficient hole-transport material (HTM) for perovskite solar cells (PSCs) are one of the most demanding research areas. At present, 2,2',7,7'-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene (spiro-MeOTAD) is a commonly used HTM in the fabrication of high-efficiency PSCs; however, its complicated synthesis, addition of a dopant in order to realize the best efficiency, and high cost are major challenges for the further development of PSCs. Herein, various diketopyrrolopyrrole-based small molecules were synthesized with the same backbone but distinct alkyl side-chain substituents (i.e., 2-ethylhexyl-, n-hexyl-, ((methoxyethoxy)ethoxy)ethyl-, and (2-((2-methoxyethoxy)ethoxy)ethyl)acetamide, designated as D-1, D-2, D-3, and D-4, respectively) as HTMs. The variation in the alkyl chain has shown obvious effects on the optical and electrochemical properties as well as on the molecular packing and film-forming ability. Consequently, the power conversion efficiency (PCE) of the PSC under one sun illumination (100 mW cm(-2)) is shown to increase in the order of D-1 (8.32%) < D-2 (11.12%) < D-3 (12.05%) < D-4 (17.64%). Various characterization techniques reveal that the superior performance of D-4 can be ascribed to the well-aligned highest occupied molecular orbital energy level with the counter electrode, the more compact p-p stacking with a higher coherence length, and the excellent hole mobility of 1.09 x 10(-3) cm(2) V-1 s(-1), thus providing excellent energetics for effective charge transport with minimal charge-carrier recombination. Furthermore, the addition of the dopant Li-TFSI in D-4 is shown to deliver a remarkable PCE of 20.19%, along with a short-circuit current density (J(SC)), open-circuit voltage (V-OC), and fill factor (FF) of 22.94 mA cm(-2), 1.14 V, and 73.87%, respectively, and superior stability compared to that of other HTMs. These results demonstrate the effectiveness of side-chain engineering for tailoring the properties of HTMs, thus offering new design tactics to fabricate for the synthesis of highly efficient and stable HTMs for PSCs. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Side-Chain Engineering of Diketopyrrolopyrrole-Based Hole-Transport Materials to Realize High-Efficiency Perovskite Solar Cells | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Jong Seung | - |
dc.identifier.doi | 10.1021/acsami.0c17583 | - |
dc.identifier.scopusid | 2-s2.0-85100654330 | - |
dc.identifier.wosid | 000621051200041 | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.13, no.6, pp.7405 - 7415 | - |
dc.relation.isPartOf | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 13 | - |
dc.citation.number | 6 | - |
dc.citation.startPage | 7405 | - |
dc.citation.endPage | 7415 | - |
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.keywordAuthor | perovskite solar cell | - |
dc.subject.keywordAuthor | donor-acceptor small molecules | - |
dc.subject.keywordAuthor | hole-transport materials | - |
dc.subject.keywordAuthor | morphology | - |
dc.subject.keywordAuthor | diketopyrrolopyrrole | - |
dc.subject.keywordAuthor | side-chain engineering | - |
dc.subject.keywordAuthor | device stability | - |
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