| Title: | Tunable emissive ▫$CsPbBr_3 /Cs_4PbBr_6$▫ quantum dots engineered by discrete phase transformation for enhanced photogating in field-effect phototransistors |
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| Authors: | ID Xiao, Han (Author)
ID Wan, Siyuan (Author)
ID He, Lin (Author)
ID Zou, Junlong (Author)
ID Mavrič, Andraž (Author)
ID Wang, Yixi (Author)
ID Piotrowski, Marek (Author)
ID Kumar Bandela, Anil (Author)
ID Samorì, Paolo (Author)
ID Wang, Zhiming M. (Author), et al. |
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| Files: |  https://onlinelibrary.wiley.com/doi/epdf/10.1002/advs.202401973
 10.1002.advs.202401973.pdf (4,02 MB)
MD5: DE9DEEB065D14826A7EA621AA505D6E3
lanek.pdf (15,30 MB)
MD5: 8F0079518C72A5FFBEEF5A322221D98A
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| Language: | English |
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| Work type: | Unknown |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | UNG - University of Nova Gorica
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| Abstract: | Precise control of quantum structures in hybrid nanocrystals requires advancements in scientific methodologies. Here, on the design of tunable CsPbBr3/Cs4PbBr6 quantum dots are reported by developing a unique discrete phase transformation approach in Cs4PbBr6 nanocrystals. Unlike conventional hybrid systems that emit solely in the green region, this current strategy produces adjustable luminescence in the blue (450 nm), cyan (480 nm), and green (510 nm) regions with high photoluminescence quantum yields up to 45%, 60%, and 85%, respectively. Concentration‐dependent studies reveal that phase transformation mechanisms and the factors that drive CsBr removal occur at lower dilutions while the dissolution–recrystallization process dominates at higher dilutions. When the polymer‐CsPbBr3/Cs4PbBr6 integrated into a field‐effected transistor the resulting phototransistors featured enhanced photosensitivity exceeding 105, being the highest reported for an n‐type phototransistor, while maintaining good transistor performances as compared to devices consisting of polymer‐CsPbBr3 NCs. |
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| Keywords: | crystallization mechanisms, dilution-induced kinetic trapping, photogating effect, phototransistors, quantum dots |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 01.01.2024 |
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| Year of publishing: | 2024 |
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| Number of pages: | str. 1-12 |
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| Numbering: | Vol. 11, issue 32, [article no.] 2401973 |
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| PID: | 20.500.12556/RUNG-9152  |
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| COBISS.SI-ID: | 199901955 |
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| ISSN: | 2198-3844 |
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| UDC: | 53 |
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| ISSN on article: | 2198-3844 |
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| eISSN: | 2198-3844 |
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| DOI: | 10.1002/advs.202401973 |
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| NUK URN: | URN:SI:UNG:REP:EVBDZQNY |
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| Publication date in RUNG: | 26.06.2024 |
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| Views: | 987 |
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| Downloads: | 11 |
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