Biexciton emission from sol-gel ZnMgO nanopowders

We studied the power-dependent photoluminescence of Zn(1-x)Mg(x)O nanopowders grown by sol-gel method, at temperature T = 100 K. At moderate optical pumping intensity, a nonlinear emission band due to the radiative recombination of free biexcitons was detected. We found that the free biexciton binding energies of Zn(1-x)Mg(x)O nanopowder (0.01 <= x <= 0.05) are nearly constant (13.5 +/- 1.5 meV). (C) 2010 American Institute of Physics. [doi:10.1063/1.3428780]

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biexcitons , binding energy , electron-hole recombination , magnesium compounds , nanoparticles , nonlinear optics , optical pumping , photoluminescence , sol-gel processing , wide band gap semiconductors , zinc compounds

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http://dx.doi.org/10.1063/1.3428780
https://ir.lib.nycu.edu.tw/handle/11536/5409

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Biexciton emission from sol-gel ZnMgO nanopowders

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