Zhang Xuebing, Guo Changxing. EFFECT OF ELECTRON IRRADIATION ON HIGH TEMPERATURE OXIDIZED POROUS SILICON[J]. Chinese Journal of Luminescence, 1996,17(2): 111-115
Zhang Xuebing, Guo Changxing. EFFECT OF ELECTRON IRRADIATION ON HIGH TEMPERATURE OXIDIZED POROUS SILICON[J]. Chinese Journal of Luminescence, 1996,17(2): 111-115DOI:
High temperature oxidized porous silicon has been investigated.Three peaks can be seen on the cathodeluminescent(CL)spectrum.The intensity of these peaks decreases fast with electron irradiation.For poor photoluminescent(PL)sample
the PL intensity enhances obviously after electron irradiation.The IR and Raman spectra of high temperature oxidized porous silicon show that whose strueture is mainly SiO
x
.Further analysis shows that three peaks may come from the luminescence of defect centers in SiO
x
.As electron irradiation
some other defects are generated in SiO
x
.This makes the CL intensity decrease and only through these defects the luminescent centers can be excited by UV light