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Article: Minimizing Voltage Loss in Efficient All-Inorganic CsPbI2Br Perovskite Solar Cells through Energy Level Alignment

TitleMinimizing Voltage Loss in Efficient All-Inorganic CsPbI2Br Perovskite Solar Cells through Energy Level Alignment
Authors
Issue Date2019
PublisherAmerican Chemical Society. The Journal's web site is located at https://pubs.acs.org/journal/aelccp
Citation
ACS Energy Letters, 2019, v. 4 n. 10, p. 2491-2499 How to Cite?
AbstractAll-inorganic CsPbI2Br, prized for its strong stability against thermal aging and light soaking, has attracted intensive attention. However, a large energy loss results from the serious energy level offset of 1.05 eV between CsPbI2Br and Spiro-MeOTAD, hindering the further efficiency improvement of perovskite solar cells. To address this issue, a moderate energy level (CsPbI2Br)1–x(CsPbI3)x layer has been introduced at the interface between CsPbI2Br and Spiro-MeOTAD to form a graded energy level alignment, the interpolation of which has offered the energy level gradient for reducing the resistance of hole transport. Correspondingly, the energy level tailoring has minimized the energy loss, and a remarkable VOC improved from 1.12 to 1.32 V, which is one of the highest values for CsPbI2Br-based solar cells. A relatively good thermal stability has also been validated. These good performances indicate that setting an intermediate energy level alignment will be a potential strategy for idealized device architecture to minimize energy loss.
Persistent Identifierhttp://hdl.handle.net/10722/303970
ISSN
2023 Impact Factor: 19.3
2023 SCImago Journal Rankings: 7.202
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorXu, WZ-
dc.contributor.authorHe, F-
dc.contributor.authorZhang, M-
dc.contributor.authorNie, P-
dc.contributor.authorZhang, S-
dc.contributor.authorZhao, C-
dc.contributor.authorLuo, R-
dc.contributor.authorLi, J-
dc.contributor.authorZhang, X-
dc.contributor.authorZhao, S-
dc.contributor.authorLi, W-
dc.contributor.authorKang, F-
dc.contributor.authorNan, CW-
dc.contributor.authorWei, G-
dc.date.accessioned2021-09-23T08:53:23Z-
dc.date.available2021-09-23T08:53:23Z-
dc.date.issued2019-
dc.identifier.citationACS Energy Letters, 2019, v. 4 n. 10, p. 2491-2499-
dc.identifier.issn2380-8195-
dc.identifier.urihttp://hdl.handle.net/10722/303970-
dc.description.abstractAll-inorganic CsPbI2Br, prized for its strong stability against thermal aging and light soaking, has attracted intensive attention. However, a large energy loss results from the serious energy level offset of 1.05 eV between CsPbI2Br and Spiro-MeOTAD, hindering the further efficiency improvement of perovskite solar cells. To address this issue, a moderate energy level (CsPbI2Br)1–x(CsPbI3)x layer has been introduced at the interface between CsPbI2Br and Spiro-MeOTAD to form a graded energy level alignment, the interpolation of which has offered the energy level gradient for reducing the resistance of hole transport. Correspondingly, the energy level tailoring has minimized the energy loss, and a remarkable VOC improved from 1.12 to 1.32 V, which is one of the highest values for CsPbI2Br-based solar cells. A relatively good thermal stability has also been validated. These good performances indicate that setting an intermediate energy level alignment will be a potential strategy for idealized device architecture to minimize energy loss.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at https://pubs.acs.org/journal/aelccp-
dc.relation.ispartofACS Energy Letters-
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in [JournalTitle], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [insert ACS Articles on Request author-directed link to Published Work, see http://pubs.acs.org/page/policy/articlesonrequest/index.html].-
dc.titleMinimizing Voltage Loss in Efficient All-Inorganic CsPbI2Br Perovskite Solar Cells through Energy Level Alignment-
dc.typeArticle-
dc.identifier.emailLi, W: liwd@hku.hk-
dc.identifier.authorityLi, W=rp01581-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/acsenergylett.9b01662-
dc.identifier.scopuseid_2-s2.0-85073165544-
dc.identifier.hkuros325711-
dc.identifier.volume4-
dc.identifier.issue10-
dc.identifier.spage2491-
dc.identifier.epage2499-
dc.identifier.isiWOS:000490365500020-
dc.publisher.placeUnited States-

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