Hu Kai-sheng, Gao Ying, Su Xi-an, Liu Xue-yan, Wen Qing-xiang. DEEP LEVEL IN Ga<sub>x</sub>Al<sub>1-x</sub>As LED AND THE INFLUENCE ON THE OPTICAL AND ELECTRICAL PROPERTIES[J]. Chinese Journal of Luminescence, 1981,2(2): 34-44
Hu Kai-sheng, Gao Ying, Su Xi-an, Liu Xue-yan, Wen Qing-xiang. DEEP LEVEL IN Ga<sub>x</sub>Al<sub>1-x</sub>As LED AND THE INFLUENCE ON THE OPTICAL AND ELECTRICAL PROPERTIES[J]. Chinese Journal of Luminescence, 1981,2(2): 34-44DOI:
As LEDs are studied by thermally stimulated capacitance and relaxation capacitance.Depth
concentration and capture cross section of deep levels can be determined from experimental results.Both increase of the voltage threshold of I(Ⅴ) curve at forward bias
even with negative resistance and significant decrease of capacitance are observed with decreasing temperature. These changes can not be explained by considering shift ofF ermi level and change of permittivity with temperature. Both decrease of breakdown voltage of negative resistance and increase of capacitance were found when LEDs are illumi-neted by infrared radiation. A new main peak (1.26ev) of light emission of LEDs is observed at liquid nitrogen temperature