Simple synthesis and molecular engineering of low-cost and star-shaped carbazole-based hole transporting materials for highly efficient perovskite solar cells
DC Field | Value | Language |
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dc.contributor.author | Lu, Chunyuan | - |
dc.contributor.author | Choi, In Taek | - |
dc.contributor.author | Kim, Jeongho | - |
dc.contributor.author | Kim, Hwan Kyu | - |
dc.date.accessioned | 2021-09-03T00:10:14Z | - |
dc.date.available | 2021-09-03T00:10:14Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2017-10-14 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/81909 | - |
dc.description.abstract | Perovskite solar cells (PrSCs) have emerged as a very promising technology in the field of photovoltaics by demonstrating power conversion efficiencies (PCEs) soaring from 3.9% to above 22% within the past eight years. To date, perovskite solar cells mainly depend on spiro-OMeTAD to perform a key role as a hole transporting material (HTM). However, the complicated multi-step synthetic procedures and high-cost purification process for spiro-OMeTAD limited its potential for commercial application. Herein, three new carbazole-based HTMs with a starburst structure, coded as SGT-405(3,6), SGT-410(3,6) and SGT-411(3,6) via tuning the substitution position from the (2,7) to the (3,6) position of the carbazole moiety, have been successfully synthesized via three-step synthesis from commercially available reagents and investigated for highly efficient perovskite solar cells. By adopting this strategy, among them, molecularly engineered carbazole derivative SGT-405(3,6) exhibits significantly increased T-g (192.7 degrees C), improved film forming ability, reduced hole reorganization energy and enhanced hole mobility compared to its parent molecule SGT-405(2,7) and spiro-OMeTAD. Owing to the promising properties of SGT-405(3,6), meso-porous type PrSCs employing SGT-405(3,6) showed a remarkable PCE of 18.87%, which is better than that of the photovoltaic device employing spiro-OMeTAD (17.71%). To the best of our knowledge, the achieved PCE (18.87%) is the highest value reported for devices with the structure of FTO/compact TiO2/meso-porous TiO2/CH3NH3PbI3-xClx/HTM/Au employing small-molecular HTMs. Meanwhile, owing to the simple synthesis of SGT-405(3,6), compared with SGT-405(2,7) previously developed by our group, synthesis cost was much lowered, resulting in low cost compared to the spiro-OMeTAD and SGT-405(3,6), by approximately three times. Furthermore, the long-term device stability of PrSCs was enhanced for SGT-405(3,6) to some extent compared to those of other HTMs studied here due to the good uniform capping layer of SGT-405(3,6) on top of the perovskite layer and the prevention of moisture penetration into the perovskite layer. Therefore, SGT-405(3,6) is a promising low-cost and efficient non-spiro type HTM with potential to replace expensive spiro-OMeTAD for PrSCs. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | LIGHT-EMITTING-DIODES | - |
dc.subject | HALIDE PEROVSKITES | - |
dc.subject | SPIRO-OMETAD | - |
dc.subject | DERIVATIVES | - |
dc.subject | ELECTRON | - |
dc.subject | PHOTOVOLTAICS | - |
dc.subject | COPOLYMERS | - |
dc.subject | STABILITY | - |
dc.subject | OLIGOMERS | - |
dc.subject | LENGTHS | - |
dc.title | Simple synthesis and molecular engineering of low-cost and star-shaped carbazole-based hole transporting materials for highly efficient perovskite solar cells | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Hwan Kyu | - |
dc.identifier.doi | 10.1039/c7ta04762b | - |
dc.identifier.scopusid | 2-s2.0-85030689042 | - |
dc.identifier.wosid | 000412781700021 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.5, no.38, pp.20263 - 20276 | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 5 | - |
dc.citation.number | 38 | - |
dc.citation.startPage | 20263 | - |
dc.citation.endPage | 20276 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | LIGHT-EMITTING-DIODES | - |
dc.subject.keywordPlus | HALIDE PEROVSKITES | - |
dc.subject.keywordPlus | SPIRO-OMETAD | - |
dc.subject.keywordPlus | DERIVATIVES | - |
dc.subject.keywordPlus | ELECTRON | - |
dc.subject.keywordPlus | PHOTOVOLTAICS | - |
dc.subject.keywordPlus | COPOLYMERS | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | OLIGOMERS | - |
dc.subject.keywordPlus | LENGTHS | - |
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