| Issue |
EPL
Volume 99, Number 1, July 2012
|
|
|---|---|---|
| Article Number | 17003 | |
| Number of page(s) | 6 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/99/17003 | |
| Published online | 10 July 2012 | |
White electroluminescence from hybrid organic inorganic LEDs based on thermally evaporated nanocrystals
1 Center for Organic Electronics, CSIR-National Physical Laboratory - Dr. K.S. Krishnan Road, New Delhi-110012, India
2 Instrument Design Development Center, Indian Institute of Technology Delhi - New Delhi-110016, India
Received: 11 April 2012
Accepted: 29 May 2012
Light-emitting diodes (LEDs) with a broad spectral emission have been fabricated using co-evaporated monolayers of cadmium sulfide (CdS) and cadmium telluride (CdTe) nanocrystals in a hybrid organic-inorganic structure. The nanocrystals of CdS and CdTe were grown by vacuum thermal evaporation technique. The incorporation of 50:50 ratio of CdS and CdTe resulted in a broad emission spectrum with CIE coordinates (0.22, 0.33). The fine tuning of the emission spectrum to achieve pure white light (CIE coordinates (0.30, 0.33)) was achieved by incorporating a small quantity of 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyan (DCM) dye in the device structure. The study indicates a promising route towards more stable and efficient light-emitting devices for lighting applications.
PACS: 73.61.Ga – II-VI semiconductors / 81.07.Bc – Nanocrystalline materials / 78.60.Fi – Electroluminescence
© EPLA, 2012
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.