Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김은규 | - |
dc.date.accessioned | 2020-08-27T05:36:12Z | - |
dc.date.available | 2020-08-27T05:36:12Z | - |
dc.date.issued | 2019-08 | - |
dc.identifier.citation | NANO LETTERS, v. 19, no. 8, Page. 5604-5611 | en_US |
dc.identifier.issn | 1530-6984 | - |
dc.identifier.issn | 1530-6992 | - |
dc.identifier.uri | https://pubs.acs.org/doi/10.1021/acs.nanolett.9b02142 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/152653 | - |
dc.description.abstract | Because the power conversion efficiency (PCE) of hybrid halide perovskite solar cells (PSCs) could exceed 24%, extensive research has been focused on improving their long-term stability for commercialization in the near future. In a previous study, we reported that the addition of a number of ionized iodide (triiodide: I-3(-)) ions during perovskite film formation significantly improved the efficiency of PSCs by reducing deep-level defects in the perovskite layer. Understanding the relationship between the concentration of these defects and the long-term chemical aging of PSCs is important not only for obtaining fundamental insight into the perovskite materials but also for studying the long-term chemical stability of PSCs. Herein we aim to identify the origin of the natural decay in PCE during long-term chemical aging of PSCs in the dark based on formamidinium lead triiodide by comparing the performance of control and low-defect (LD) devices. After aging for 200 days, the change in the PCE of the LD devices (1.3%) was found to be half that of the control devices (2.6%). We investigated this difference using grazing incidence wide-angle X-ray scattering, deep level transient spectroscopy, scanning photoelectron microscopy, and high-resolution photoemission spectroscopy. The addition of I-3(-) was found to reduce the amounts of hydroxide and O-x in the halide perovskites (HPs), affecting the migration of defects and the structural transformation of the HPs. | en_US |
dc.description.sponsorship | This work was supported by the Climate Change Program (NRF-2015M1A2A2056542), Global Frontier Program (2012M3A6A7054861), EEMAP (2017M3A7B4049173), the SRC Center for Topological Matter (2018R1A5A6075964), and the Basic Science Research Program (NRF-2017R1D1A1B03029832 and NRF-2018R1A2A3074921) through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (MSIP).) PES experiments at PLS-II at the 10D and 8A1 beamlines were supported in part by the Ministry of Science, ICT, and POSTECH. GIWAXS experiments at the PLS-II 6D UNIST-PAL beamline were supported in part by MSIP, POSTECH, and UNIST Central Research Facilities. | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMER CHEMICAL SOC | en_US |
dc.subject | Hybrid perovskite | en_US |
dc.subject | defect migration | en_US |
dc.subject | GIWAXS | en_US |
dc.subject | DLTS | en_US |
dc.subject | SPEM | en_US |
dc.subject | HRPES | en_US |
dc.title | Long-Term Chemical Aging of Hybrid Halide Perovskites | en_US |
dc.type | Article | en_US |
dc.relation.no | 8 | - |
dc.relation.volume | 19 | - |
dc.identifier.doi | 10.1021/acs.nanolett.9b02142 | - |
dc.relation.page | 5604-5611 | - |
dc.relation.journal | NANO LETTERS | - |
dc.contributor.googleauthor | Park, Byung-wook | - |
dc.contributor.googleauthor | Lee, Dong Uk | - |
dc.contributor.googleauthor | Jung, Daesung | - |
dc.contributor.googleauthor | Yang, Woon Seok | - |
dc.contributor.googleauthor | Vu, Thi Kim Oanh | - |
dc.contributor.googleauthor | Shin, Tae Joo | - |
dc.contributor.googleauthor | Baik, Jaeyoon | - |
dc.contributor.googleauthor | Hwang, Chan-Cuk | - |
dc.contributor.googleauthor | Kim, Eun Kyu | - |
dc.contributor.googleauthor | Seok, Sang Il | - |
dc.relation.code | 2019001533 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF PHYSICS | - |
dc.identifier.pid | ek-kim | - |
dc.identifier.orcid | https://orcid.org/0000-0003-3373-963X | - |
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