Light-sensitive monolayer-thick nanocrystal skins of face-down self-oriented colloidal quantum wells
Colloidal quantum wells (CQWs), a quasi-two-dimensional, atomically-flat sub-family of semiconductor nanocrystals, are well suited to produce excellent devices for photosensing applications thanks to their extraordinarily large absorption cross-sections. In this work, we propose and demonstrate a ne...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2024
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| Online Access: | https://hdl.handle.net/10356/173213 |
| _version_ | 1811694486411018240 |
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| author | Bozkaya, Taylan Isik, Furkan Bozkaya, Iklim Delikanli, Savas Unal, Emre Demir, Hilmi Volkan |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Bozkaya, Taylan Isik, Furkan Bozkaya, Iklim Delikanli, Savas Unal, Emre Demir, Hilmi Volkan |
| author_sort | Bozkaya, Taylan |
| collection | NTU |
| description | Colloidal quantum wells (CQWs), a quasi-two-dimensional, atomically-flat sub-family of semiconductor nanocrystals, are well suited to produce excellent devices for photosensing applications thanks to their extraordinarily large absorption cross-sections. In this work, we propose and demonstrate a new class of light-sensitive nanocrystal skins (LS-NS) that employ a monolayer of face-down orientation-controlled self-assembled CQWs as the active absorbing layer in the UV-visible range. This CQW LS-NS platform enables non-conventional photosensing operation that relies on the strong optical absorption of the monolayered assembly of CQWs and the subsequent photogenerated potential build-up across the device, allowing for self-powered operation. Here such self-oriented CQWs reduce the surface roughness in their monolayer-thick film, essential to high device performance. Owing to their ease of fabrication and low cost, these devices hold great promise for large-scale use in semi-transparent photosensing surfaces. |
| first_indexed | 2024-10-01T07:08:20Z |
| format | Journal Article |
| id | ntu-10356/173213 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:08:20Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1732132024-01-19T15:41:33Z Light-sensitive monolayer-thick nanocrystal skins of face-down self-oriented colloidal quantum wells Bozkaya, Taylan Isik, Furkan Bozkaya, Iklim Delikanli, Savas Unal, Emre Demir, Hilmi Volkan School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences School of Materials Science and Engineering LUMINOUS! Centre of Excellence for Semiconductor Lighting & Displays Science::Physics Light Sensitive Materials Nanocrystals Colloidal quantum wells (CQWs), a quasi-two-dimensional, atomically-flat sub-family of semiconductor nanocrystals, are well suited to produce excellent devices for photosensing applications thanks to their extraordinarily large absorption cross-sections. In this work, we propose and demonstrate a new class of light-sensitive nanocrystal skins (LS-NS) that employ a monolayer of face-down orientation-controlled self-assembled CQWs as the active absorbing layer in the UV-visible range. This CQW LS-NS platform enables non-conventional photosensing operation that relies on the strong optical absorption of the monolayered assembly of CQWs and the subsequent photogenerated potential build-up across the device, allowing for self-powered operation. Here such self-oriented CQWs reduce the surface roughness in their monolayer-thick film, essential to high device performance. Owing to their ease of fabrication and low cost, these devices hold great promise for large-scale use in semi-transparent photosensing surfaces. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) Submitted/Accepted version The authors gratefully acknowledge the financial support in part from the Singapore Agency for Science, Technology and Research (A*STAR) MTC program under grant number M21J9b0085, Ministry of Education, Singapore, under its Academic Research Fund Tier 1 (MOE-RG62/20), and in part from TUBITAK 119N343, 121C266, 121N395, 120N076 and 20AG001. H.V.D. also acknowledges support from TUBA and TUBITAK 2247-A National Leader Researchers Program (121C266). 2024-01-19T03:32:41Z 2024-01-19T03:32:41Z 2023 Journal Article Bozkaya, T., Isik, F., Bozkaya, I., Delikanli, S., Unal, E. & Demir, H. V. (2023). Light-sensitive monolayer-thick nanocrystal skins of face-down self-oriented colloidal quantum wells. Nanoscale, 15(43), 17583-17588. https://dx.doi.org/10.1039/d3nr04065h 2040-3372 https://hdl.handle.net/10356/173213 10.1039/d3nr04065h 37873738 2-s2.0-85175436376 43 15 17583 17588 en M21J9b0085 MOE-RG62/20 Nanoscale © 2023 The Author(s). Published by Royal Society of Chemistry. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1039/D3NR04065H. application/pdf |
| spellingShingle | Science::Physics Light Sensitive Materials Nanocrystals Bozkaya, Taylan Isik, Furkan Bozkaya, Iklim Delikanli, Savas Unal, Emre Demir, Hilmi Volkan Light-sensitive monolayer-thick nanocrystal skins of face-down self-oriented colloidal quantum wells |
| title | Light-sensitive monolayer-thick nanocrystal skins of face-down self-oriented colloidal quantum wells |
| title_full | Light-sensitive monolayer-thick nanocrystal skins of face-down self-oriented colloidal quantum wells |
| title_fullStr | Light-sensitive monolayer-thick nanocrystal skins of face-down self-oriented colloidal quantum wells |
| title_full_unstemmed | Light-sensitive monolayer-thick nanocrystal skins of face-down self-oriented colloidal quantum wells |
| title_short | Light-sensitive monolayer-thick nanocrystal skins of face-down self-oriented colloidal quantum wells |
| title_sort | light sensitive monolayer thick nanocrystal skins of face down self oriented colloidal quantum wells |
| topic | Science::Physics Light Sensitive Materials Nanocrystals |
| url | https://hdl.handle.net/10356/173213 |
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