Colloidal Synthesis of Air-Stable Alloyed CsSn1-xPbxI3 Perovskite Nanocrystals for Use in Solar Cells
Organic-inorganic hybrid perovskite solar cells have demonstrated unprecedented high power conversion efficiencies in the past few years. Now, the universal instability of the perovskites has become the main barrier for this kind of solar cells to realize commercialization. This situation can be even worse for those tin-based perovskites, especially for CsSnI3, because upon exposure to ambient atmosphere the desired black orthorhombic phase CsSnI3 would promptly lose single crystallinity and degrade to the inactive yellow phase, followed by irreversible oxidation into metallic Cs2SnI6. By alloying CsSnI3 with CsPbI3, we herein report the synthesis of alloyed perovskite quantum dot (QD), CsSn1-xPbxI3, which not only can be phase-stable for months in purified colloidal solution but also remains intact even directly exposed to ambient air, far superior to both of its parent CsSnI3 and CsPbI3 QDs. Ultrafast transient absorption spectroscopy studies reveal that the photoexcited electrons in the alloyed QDs can be injected into TiO2 nanocrystals at a fast rate of 1.12 × 1011 s-1, which enables a high photocurrent generation in solar cells.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2017 |
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| Erschienen: |
2017 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:139 |
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| Enthalten in: |
Journal of the American Chemical Society - 139(2017), 46 vom: 22. Nov., Seite 16708-16719 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Liu, Feng [VerfasserIn] |
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| Anmerkungen: |
Date Completed 28.12.2017 Date Revised 28.12.2017 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1021/jacs.7b08628 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM277588022 |
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| 500 | |a Date Revised 28.12.2017 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Organic-inorganic hybrid perovskite solar cells have demonstrated unprecedented high power conversion efficiencies in the past few years. Now, the universal instability of the perovskites has become the main barrier for this kind of solar cells to realize commercialization. This situation can be even worse for those tin-based perovskites, especially for CsSnI3, because upon exposure to ambient atmosphere the desired black orthorhombic phase CsSnI3 would promptly lose single crystallinity and degrade to the inactive yellow phase, followed by irreversible oxidation into metallic Cs2SnI6. By alloying CsSnI3 with CsPbI3, we herein report the synthesis of alloyed perovskite quantum dot (QD), CsSn1-xPbxI3, which not only can be phase-stable for months in purified colloidal solution but also remains intact even directly exposed to ambient air, far superior to both of its parent CsSnI3 and CsPbI3 QDs. Ultrafast transient absorption spectroscopy studies reveal that the photoexcited electrons in the alloyed QDs can be injected into TiO2 nanocrystals at a fast rate of 1.12 × 1011 s-1, which enables a high photocurrent generation in solar cells | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 700 | 1 | |a Ding, Chao |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Yaohong |e verfasserin |4 aut | |
| 700 | 1 | |a Ripolles, Teresa S |e verfasserin |4 aut | |
| 700 | 1 | |a Kamisaka, Taichi |e verfasserin |4 aut | |
| 700 | 1 | |a Toyoda, Taro |e verfasserin |4 aut | |
| 700 | 1 | |a Hayase, Shuzi |e verfasserin |4 aut | |
| 700 | 1 | |a Minemoto, Takashi |e verfasserin |4 aut | |
| 700 | 1 | |a Yoshino, Kenji |e verfasserin |4 aut | |
| 700 | 1 | |a Dai, Songyuan |e verfasserin |4 aut | |
| 700 | 1 | |a Yanagida, Masatoshi |e verfasserin |4 aut | |
| 700 | 1 | |a Noguchi, Hidenori |e verfasserin |4 aut | |
| 700 | 1 | |a Shen, Qing |e verfasserin |4 aut | |
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