Fabrication and electro-optic properties of a MWCNT driven novel electroluminescent lamp
IR@NPL: CSIR-National Physical Laboratory, New Delhi
View Archive Info| Field | Value | |
| Title |
Fabrication and electro-optic properties of a MWCNT driven novel electroluminescent lamp
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| Creator |
Haranath, D.
Sahai, Sonal Mishra, Savvi Husain, M. Shanker, Virendra |
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| Subject |
Materials Science
Applied Physics/Condensed Matter Nanoscience/ Nanotechnology |
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| Description |
We present a novel, cost-effective and facile technique, wherein multi-walled carbon nanotubes (CNTs) were used to transform a photoluminescent material to exhibit stable and efficient electroluminescence (EL) at low voltages. As a case study, a commercially available ZnS:Cu phosphor (P-22G having a quantum yield of 65 +/- 5%) was combined with a very low (similar to 0.01 wt%) concentration of CNTs dispersed in ethanol and its alternating current driven electroluminescence (AC-EL) is demonstrated. The role of CNTs has been understood as a local electric field enhancer and facilitator in the hot carrier injection inside the ZnS crystal to produce EL in the hybrid material. The mechanism of EL is discussed using an internal field emission model, intra-CNT impact excitation and the recombination of electrons and holes through the impurity states.
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| Publisher |
IOP Publishing
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| Date |
2012-11-02
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://npl.csircentral.net/3571/1/Fabrication%20and%20electro-optic%20properties.pdf
Haranath, D. and Sahai, Sonal and Mishra, Savvi and Husain, M. and Shanker, Virendra (2012) Fabrication and electro-optic properties of a MWCNT driven novel electroluminescent lamp. Nanotechnology, 23 (43). pp. 435704-435711. ISSN 0957-4484 |
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| Relation |
http://npl.csircentral.net/3571/
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