Photoconductivity of SrAlF5 crystals doped with Ce3+ ions

17th International Youth Scientific School on Actual Problems of Magnetic Resonance and its Applications

Pavlov, V.V.^1 ; Semashko, V.V.^1 ; Yunusova, A.N.^1 ; Marisov, M.A.^1

Kazan Federal University, Kremlevskaja str., 18, Kazan

420008, Russia^1

关键词: Complex permittivity;    Excited state absorption;    Microwave resonance;    Photoconductivity signals;    Photoconductivity spectrum;    Spectral range;    Temporal behaviour;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/560/1/012013/pdf
DOI  :  10.1088/1742-6596/560/1/012013

来源: IOP

【 摘 要 】

Temporal behaviour of the complex permittivity of Ce:SrAlF5and Ce,Yb:SrAlF5crystals under laser irradiation in 240-280 nm spectral range was investigated by a microwave resonance technique. The photoconductivity spectrum of these crystals was detected. It was established that photoconductivity signal of the samples in 240-280 nm spectral range is caused by two processes: excited-state absorption of Ce3+ions and photoionization of color centers.