Secondary anti-stokes emission from the bulk of gallium phosphide at 4.2 K

Горелик, В. С.; Karuzskii, A. L.; Sverbil, P. P.

doi:10.1134/1.1514772

Cited by 2 publications

(3 citation statements)

References 2 publications

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“…Accordingly, it is considered that the ASPL spectrum is essentially the same as the SPL one. This is different from the cases of GaP [2] and ZnSe:Cr [3], where no excitonic PL is observed. The ASPL intensity remains constant even after a long irradiation of the 442 nm laser light, which is one of the characteristic phenomena.…”

Section: Resultscontrasting

confidence: 89%

“…Many extensive studies have been performed on anti-Stokes photoluminescence (ASPL) in bulk semiconductors [1][2][3], quantum-well structures [4,5], hetrojunctions [6] and nanocrystals [7,8]. ASPL has been interpreted as being due to a two-step two-photon absorption process [1-3, 5, 7, 8], a direct consequence of photon recycling [4], or an Auger fountain mechanism [6].…”

Section: Introductionmentioning

confidence: 99%

“…ASPL has been interpreted as being due to a two-step two-photon absorption process [1-3, 5, 7, 8], a direct consequence of photon recycling [4], or an Auger fountain mechanism [6]. The ASPL in indirect type semiconductors GaP [2] and Cr doped ZnSe [3] appear even under excitation by a cw low-power laser. In these crystals only charged carriers are generated and visible ASPL is emitted, but no band edge ASPL due to excitonic transitions is observed.…”

Section: Introductionmentioning

confidence: 99%

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Ultraviolet anti-Stokes photoluminescence in GaN single crystals

Goto¹,

Fujimoto²,

Yao³

2006

J. Phys.: Condens. Matter

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Ultraviolet anti-Stokes photoluminescence (ASPL) is observed under continuous visible light excitation in a GaN single crystal at 4 and 77 K. The ASPL spectra are almost the same as the Stokes photoluminescence (SPL) spectra under band-to-band excitation. Namely, we observe ASPL due to bound and free excitons at 4 and 77 K, respectively. Based on the temporal decay, the excitation spectrum and the excitation intensity dependence of the ASPL intensity, we propose a two-step two-photon absorption mechanism through an electron trapped at a deep ionized donor with a lifetime of 1.45 ms.

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Section: Resultscontrasting

confidence: 89%