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Missing links for triplet radiative recombination in light emitting devices

Singh, Jai (2009). Missing links for triplet radiative recombination in light emitting devices. In: 2009 International School on Condensed Matter Physics, Varna, Bulgaria, 31 August - 5 September 2008.

Document type: Conference Paper

IRMA ID 80801245xPUB22
Author Singh, Jai
Title Missing links for triplet radiative recombination in light emitting devices
Conference Name 2009 International School on Condensed Matter Physics
Conference Location Varna, Bulgaria
Conference Dates 31 August - 5 September 2008
Conference Publication Title Journal of Optoelectronics and Advanced Materials
Place of Publication Bucharest, Romania
Publisher National Institute of Materials Physics
Publication Year 2009
Volume Number 11
Start Page 1122
End Page 1127
Total Pages 6
HERDC Category E1 - Conference Publication (DEST)
Abstract Light emission from triplet excitons in light emitting devices (LED) is reviewed. The rate of spontaneous emission of triplet excitons is presented in inorganic amorphous semiconductors, molecular crystals and conjugated polymers containing platinum atoms in the chain. It is shown that the recently discovered new time-dependent spin-orbit-photon interaction operator is responsible for the radiative emission from triplet excitations in materials, and the transition occurs due to flipping of the spin. The rate depends on the square of the atomic number of the constituting atoms. The calculated rates and corresponding radiative lifetime agree very well with the known experimental results in conjugated polymers and inorganic amorphous semiconductors. Rates in molecular crystals are compared with those obtained from the traditional theory.
 
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Created: Mon, 22 Mar 2010, 12:03:05 CST by Sarena Wegener