1. 20th Int. Conf. Photoacoustic and Photothermal Phenomena (ICPPP20), Moscow, Russia, 7 – 12 July, 2019.
2. Photoacoustics and Photoacoustic Spectroscopy;Rosencwaig,1981
3. Optical Processes in Semiconductors;Pankove,1971
4. Photoelectronic Properties of Semiconductors;Bube,1992
5. Solar cell efficiency tables (Version 53);Green;Prog. Photovolt. Res. Appl.,2019