| Title: |
Quantum cutting in Li (770 nm) and Yb (1000 nm) co-dopant emission bands by energy transfer from the ZnO nano-crystalline host |
| Authors: |
Shestakov, M.V.; Tikhomirov, Victor; Kirilenko, D.; Kuznetsov, Aleksandr; Chibotaru, Liviu; Baranov, A.N.; Van Tendeloo, G.; Moshchalkov, Victor |
| Source: |
ISSN:1094-4087 ; Optics Express, vol. 19 (17), (15955-15964. |
| Publisher Information: |
Optical Society of America |
| Publication Year: |
2011 |
| Subject Terms: |
solar-cells; glass-ceramics; up-conversion; luminescence; spectroscopy; efficiency; particles; spectra; lithium; growth; Science & Technology; Physical Sciences; Optics; 0205 Optical Physics; 0906 Electrical and Electronic Engineering; 1005 Communications Technologies; 4006 Communications engineering; 4009 Electronics; sensors and digital hardware; 5102 Atomic; molecular and optical physics |
| Description: |
Li-Yb co-doped nano-crystalline ZnO has been synthesized by a method of thermal growth from the salt mixtures. X-ray diffraction, transmission electron microscopy, atomic absorption spectroscopy and optical spectroscopy confirm the doping and indicate that the dopants may form Li-Li and Yb3+-Li based nanoclusters. When pumped into the conduction and exciton absorption bands of ZnO between 250 to 425 nm, broad emission bands of about 100 nm half-height-width are excited around 770 and 1000 nm, due to Li and Yb dopants, respectively. These emission bands are activated by energy transfer from the ZnO host mostly by quantum cutting processes, which generate pairs of quanta in Li (770 nm) and Yb (1000 nm) emission bands, respectively, out of one quantum absorbed by the ZnO host. These quantum cutting phenomena have great potential for application in the down-conversion layers coupled to the Si solar cells. (C)2011 Optical Society of America ; sponsorship: Katholieke Univ Leuven, INPAC, Leuven, Belgium ; status: Published |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
https://lirias.kuleuven.be/handle/123456789/335589; https://doi.org/10.1364/OE.19.015955; https://pubmed.ncbi.nlm.nih.gov/21934959 |
| DOI: |
10.1364/OE.19.015955 |
| Availability: |
https://lirias.kuleuven.be/handle/123456789/335589; https://lirias.kuleuven.be/retrieve/85b0d41c-cf00-438a-af87-5f1292ad880b; https://doi.org/10.1364/OE.19.015955; https://pubmed.ncbi.nlm.nih.gov/21934959 |
| Rights: |
info:eu-repo/semantics/openAccess ; public |
| Accession Number: |
edsbas.F2964F7A |
| Database: |
BASE |