Temperature dependant longitudinal-optical-phonon assisted emission of free excitons in ZnO
Shenlei Shi1, and Tengchao Huang2
Chinese Optics Letters , Vol.08 , Issue s1 , PP.221-223(2010)

Keywords(OCIS Code)
160.0160; 160.4670

Abstract
The Segall-Mahan theory is employed to calculate both one and two longitudinal-optical (LO) phonon sidebands of free excitons of zinc oxide (ZnO) in a wide temperature range. The energy spacing from the zero-phonon line to 1 LO and 2 LO phonon sidebands deviates gradually from their characteristic LO phonon energy with increaseing the temperature. The experimental results are good agreement with the theoretical calculation. Only one adjustable parameter is taken into account in this calculation, which determines the range of values of the hole effective mass in ZnO.

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Note: This work was supported by the Zhejiang Provincial Natural Seience Foundation of China under Grant No.Y5080094.

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