Synthesis and characterization of greenish-blue light emitting lithium-boron complex for organic light emitting-diode applications
IR@NPL: CSIR-National Physical Laboratory, New Delhi
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| Title |
Synthesis and characterization of greenish-blue light emitting lithium-boron complex for organic light emitting-diode applications
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| Creator |
Misra, Aparna
Kumar, Pankaj Kumar, Lokendra Dhawan, S. K. Kamalasanan, M. N. Chandra, Subhas |
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| Subject |
Engineering
Materials Science |
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| Description |
A lithium-boron complex. lithium tetra (2-methyl 8-hydroxy quinolinato) boron (LiBqm(4)), which emits greenish-blue light has been synthesized by the reaction of LiBH4 with 2-methyl 8-hydroxyquinoline in a molecular weight ratio of 1:4. and Used for organic light emitting diodes (OLEDs) Fabrication. The complex has been characterized by optical absorption, Fourier Transform Infrared (FTIR), photoluminescence (PL) and electroluminescence (EL) spectroscopic methods. The thermo-gravimetric analysis (TGA) suggests that the material is quite thermally stable LIP to 380 degrees C. An optical band gap of 3.15 eV using the well-known Tauc relation and an exciton binding energy of 0.69 eV has been evaluated. OLEDs have been fabricated in ITO/N,N'-di-(3-methyl-phenyl)-N,N'diphenyl-4,4'diaminobiphenyl(TPD)/LiBqm(4)/Al configuration. PL and EL peaks exist at 503 nm. I-V characteristic of device reveals that at higher voltages the current follows I proportional to V-III law, where m > 1.
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| Publisher |
NISCAIR-CSIR
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| Date |
2006-08
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://npl.csircentral.net/2568/1/159.pdf
Misra, Aparna and Kumar, Pankaj and Kumar, Lokendra and Dhawan, S. K. and Kamalasanan, M. N. and Chandra, Subhas (2006) Synthesis and characterization of greenish-blue light emitting lithium-boron complex for organic light emitting-diode applications. Indian Journal of Engineering & Materials Sciences, 13 (8). pp. 357-361. ISSN 0971-4588 |
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| Relation |
http://npl.csircentral.net/2568/
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