Academic Journal
Enhancement in the Photorefractive Performance of Organic Composites Photosensitized with Functionalized CdSe Quantum Dots
| العنوان: | Enhancement in the Photorefractive Performance of Organic Composites Photosensitized with Functionalized CdSe Quantum Dots |
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| المؤلفون: | Liang, Yichen, Wang, Wei, Moon, Jong-Sik, Winiarz, Jeffrey G. |
| المصدر: | Chemistry Faculty Research & Creative Works |
| بيانات النشر: | Scholars' Mine |
| سنة النشر: | 2016 |
| المجموعة: | Missouri University of Science and Technology (Missouri S&T): Scholars' Mine |
| مصطلحات موضوعية: | Photorefractive, Quantum dots, Triphenyldiamine, Chemistry |
| الوصف: | Enhancement in the photorefractive (PR) performance of organic composites photosensitized by CdSe quantum dots (QCdSe) passivated with the charge-transport ligands, sulfonated triphenyldiamine (STPD), is reported. This enhancement is primarily attributed to the ability of the passivating ligand, STPD, to facilitate the charge-transfer process between the QCdSe and the triphenyldiamine (TPD) charge-transport matrix. The PR composites exhibited a maximum photocharge-generation efficiency of 0.9% and two-beam coupling gain coefficient of 110 cm-1. These figures of merit represent a significant improvement over similar composites photosensitized with more conventional trioctylphosphine oxide-passivated QCdSe (TQCdSe). Moreover, composites photosensitized with SQCdSe had a faster response time of Ï" = 128 ms at an electric field of 60 V/µm compared with Ï" = 982 ms for those containing TQCdSe. Because of the molecular similarity between the STPD passivating groups and the TPD-based charge-transport matrix, concentrations of up to 1.4 wt% of SQCdSe are achieved in PR composites without any detectable phase separation, a considerable improvement over the 0.7 wt% for TQCdSe. |
| نوع الوثيقة: | text |
| اللغة: | unknown |
| Relation: | https://scholarsmine.mst.edu/chem_facwork/2909; https://doi.org/10.1016/j.optmat.2016.05.040 |
| DOI: | 10.1016/j.optmat.2016.05.040 |
| الاتاحة: | https://scholarsmine.mst.edu/chem_facwork/2909 https://doi.org/10.1016/j.optmat.2016.05.040 |
| Rights: | © 2016 Elsevier B.V., All rights reserved. |
| رقم الانضمام: | edsbas.EA2C500D |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.optmat.2016.05.040 |
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