Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 박희준 | - |
dc.date.accessioned | 2022-09-28T06:15:09Z | - |
dc.date.available | 2022-09-28T06:15:09Z | - |
dc.date.issued | 2020-12 | - |
dc.identifier.citation | NANO ENERGY, v. 78, article no. 105159 | en_US |
dc.identifier.issn | 2211-2855; 2211-3282 | en_US |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S2211285520307370?via%3Dihub | en_US |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/175009 | - |
dc.description.abstract | Solution-processed polycrystalline perovskite films possess numerous imperfections in their surface and grain-boundary, limiting their solar cell performance and stability. To attain a full thermodynamic potential from the device along with high stability, an efficient passivation strategy that can suppress those imperfections, inducing a trap-assisted charge recombination and a defect-initiated crystal decomposition, is needed. Herein, we demonstrate a perovskite/dopant-free polymer hole-transport material (HTM) graded heterojunction (GHJ), maximizing their intermolecular interactions that can passivate under-coordinated lead cations in perovskite and immobilize its volatile organic cations by forming Lewis-adducts and hydrogen bonds. For this purpose, a series of polymer HTMs, containing defect-healable and cross-linkable functional units, are newly designed. By composing a GHJ structure, it is confirmed the perovskite crystallinity increases with reduced trap-density, enhancing built-in potential of the solar cell device and thus decreasing carrier recombination, and its heat-, water-, and light-resistibility are enhanced. Consequently, superior optoelectronic properties, providing efficiencies of 22.1% (0.096 cm2) and 20.0% (1 cm2) with a Voc of 1.22 V having only 0.37 V Voc loss, and stability, preserving 92% of the initial efficiency after 500 h of light-illumination (AM 1.5G 100 mWcm−2 without UV-cut) in ambient air without encapsulation, are attained with the GHJ n-i-p devices. | en_US |
dc.description.sponsorship | Z. Li, J. Park and H. Park contributed equally to this work. This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2020R1A2C2010342) and the Ministry of Science, ICT, and Future Planning (NRF-2018R1A1A1A05018520). This work was also supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry and Energy (MOTIE, 20174010201490). | en_US |
dc.language.iso | en | en_US |
dc.publisher | ELSEVIER | en_US |
dc.subject | Perovskite solar cells; Graded heterojunction; Dopant-free polymeric hole-transport layer; Defect passivation; Device stability; High efficiency | en_US |
dc.title | Graded Heterojunction of Perovskite/Dopant-free Polymeric Hole-Transport Layer for Efficient and Stable Metal Halide Perovskite Devices | en_US |
dc.type | Article | en_US |
dc.relation.volume | 78 | - |
dc.identifier.doi | 10.1016/j.nanoen.2020.105159 | en_US |
dc.relation.page | 105159-105159 | - |
dc.relation.journal | NANO ENERGY | - |
dc.contributor.googleauthor | Li, Zijia | - |
dc.contributor.googleauthor | Park, Jaehong | - |
dc.contributor.googleauthor | Park, Hansol | - |
dc.contributor.googleauthor | Lee, Jongmin | - |
dc.contributor.googleauthor | Kang, Yeongkwon | - |
dc.contributor.googleauthor | Ahn, Tae Kyu | - |
dc.contributor.googleauthor | Kim, Bong-Gi | - |
dc.contributor.googleauthor | Park, Hui Joon | - |
dc.relation.code | 2020048631 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DEPARTMENT OF ORGANIC AND NANO ENGINEERING | - |
dc.identifier.pid | huijoon | - |
dc.identifier.orcid | https://orcid.org/0000-0003-4607-207X | - |
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