Direct determination of level diagram in CdS by means of two-photon photoelectron spectroscopy

Andrew V. Shepelev

doi:10.1117/12.179668

13 July 1994 Direct determination of level diagram in CdS by means of two-photon photoelectron spectroscopy

Andrew V. Shepelev

Proceedings Volume 2228, Producibility of II-VI Materials and Devices; (1994) https://doi.org/10.1117/12.179668
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

This paper reports an experimental study of the photoelectron energy distribution in the two-photon photoeffect in CdS under a relatively low excitation. A comparison with the luminescence spectrum obtained on the same sample reveals the energy levels in the forbidden zone. The photoelectron and luminescence spectra were measured under both separate and simultaneous excitation of CdS by He I lamp (21.2 eV) and nitrogen laser (3.7 eV). The maximum laser beam intensity at the sample did not exceed 50 kW/cm² at a pulse length of 8 ns. A detailed description of the experimental arrangement and of the photoelectron spectrum measurement technique used is given elsewhere.

Citation Download Citation

Andrew V. Shepelev "Direct determination of level diagram in CdS by means of two-photon photoelectron spectroscopy", Proc. SPIE 2228, Producibility of II-VI Materials and Devices, (13 July 1994); https://doi.org/10.1117/12.179668

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