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http://hdl.handle.net/10397/106884
Title: | Size modulation and heterovalent doping facilitated hybrid organic and perovskite quantum dot bulk heterojunction solar cells | Authors: | Li, Y Zhou, S Xiong, Z Qin, M Liu, K Cai, G Wang, H Zhao, S Li, G Hsu, YJ Xu, J Lu, X |
Issue Date: | 23-Nov-2020 | Source: | ACS applied energy materials, 23 Nov. 2020, v. 3, no. 11, p. 11359-11367 | Abstract: | Organic photovoltaics and halide perovskite solar cells are both solution-processable third-generation photovoltaic devices (PVs) attracting enormous research attention. In this study, we demonstrate a hybrid organic and perovskite PV device by mixing all-inorganic CsPbI3 quantum dots (QDs) into the conventional organic bulk heterojunction active layer of PBDB-T:IT-M. It is found that the charge transfer properties between QDs and organic donor/acceptor interfaces can be fine-tuned with the size modulation and the heterovalent bismuth (Bi) doping of perovskite QDs, leading to an increase in open-circuit voltage. In addition, the incorporation of perovskite QDs with different sizes could effectively modify the nanoscale bulk heterojunction morphology toward more efficient charge collection and thus a higher fill factor. The photocurrent of the devices can also be improved through Rayleigh scattering and light absorption of the QDs. As a result, a noticeable enhancement in device performance has been achieved by the PBDB-T:IT-M with 10 nm Bi-doped CsPbI3 QD device. This work provides one feasible route to fine-tune the energy level alignment and nanophase separation by integrating these two promising PV materials. | Keywords: | Charge transfer Heterovalent doping Hybrid organic and perovskite solar cells Perovskite quantum dot Size modulation |
Publisher: | American Chemical Society | Journal: | ACS applied energy materials | EISSN: | 2574-0962 | DOI: | 10.1021/acsaem.0c02292 | Rights: | © 2020 American Chemical Society This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Energy Materials, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsaem.0c02292. |
Appears in Collections: | Journal/Magazine Article |
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Liu_Size_Modulation_Heterovalent.pdf | Pre-Published version | 1.54 MB | Adobe PDF | View/Open |
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