Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Thilakan, Anusha Puliparambil | en_US |
dc.contributor.author | Li, Jia-Xing | en_US |
dc.contributor.author | Chen, Tzu-Pei | en_US |
dc.contributor.author | Li, Shao-Sian | en_US |
dc.contributor.author | Chen, Chun-Wei | en_US |
dc.contributor.author | Osada, Minoru | en_US |
dc.contributor.author | Tsukagoshi, Kazuhito | en_US |
dc.contributor.author | Sasaki, Takayoshi | en_US |
dc.contributor.author | Yabushita, Atsushi | en_US |
dc.contributor.author | Wu, Kaung-Hsiung | en_US |
dc.contributor.author | Luo, Chih-Wei | en_US |
dc.date.accessioned | 2019-08-02T02:15:31Z | - |
dc.date.available | 2019-08-02T02:15:31Z | - |
dc.date.issued | 2019-06-19 | en_US |
dc.identifier.issn | 1944-8244 | en_US |
dc.identifier.uri | http://dx.doi.org/10.1021/acsami.9b02434 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/152210 | - |
dc.description.abstract | The inherent instability of UV-induced degradation in TiO2-based perovskite solar cells was largely improved by replacing the anatase-phase compact TiO2 layer with an atomic sheet transport layer (ASTL) of two-dimensional (2D) Ti1-delta O2. The vital role of microscopic carrier dynamics that govern the UV stability of perovskite solar cells was comprehensively examined in this work by performing time-resolved pump-probe spectroscopy. In conventional perovskite solar cells, the presence of a UV-active oxygen vacancy in compact TiO2 prohibits current generation by heavily trapping electrons after UV degradation. Conversely, the dominant vacancy type in the 2D Ti1-delta O2 ASTL is a titanium vacancy, which is a shallow acceptor and is not UV-sensitive. Therefore, it significantly suppresses carrier recombination and extends UV stability in perovskite solar cells with a 2D Ti1-delta O2 ASTL. Other carrier dynamics, such as electron diffusion, electron injection, and hot hole transfer processes, were found to be less affected by UV irradiation. Quantitative pump-probe data clearly show a correlation between the carrier dynamics and UV aging of perovskite solar cells, thus providing a profound insight into the factors driving UV-induced degradation in perovskite solar cells and the origin of its performance. | en_US |
dc.language.iso | en_US | en_US |
dc.subject | perovskite solar cell | en_US |
dc.subject | ultrafast mechanism | en_US |
dc.subject | pump-probe technique | en_US |
dc.subject | UV degradation | en_US |
dc.subject | two-dimensional metal oxide | en_US |
dc.subject | electron transport layer | en_US |
dc.title | Origin of Extended UV Stability of 2D Atomic Layer Titania-Based Perovskite Solar Cells Unveiled by Ultrafast Spectroscopy | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1021/acsami.9b02434 | en_US |
dc.identifier.journal | ACS APPLIED MATERIALS & INTERFACES | en_US |
dc.citation.volume | 11 | en_US |
dc.citation.issue | 24 | en_US |
dc.citation.spage | 21473 | en_US |
dc.citation.epage | 21480 | en_US |
dc.contributor.department | 交大名義發表 | zh_TW |
dc.contributor.department | 電子物理學系 | zh_TW |
dc.contributor.department | National Chiao Tung University | en_US |
dc.contributor.department | Department of Electrophysics | en_US |
dc.identifier.wosnumber | WOS:000472683300021 | en_US |
dc.citation.woscount | 0 | en_US |
Appears in Collections: | Articles |