The peak shift and evolution of upconversion luminescence from CsPbBr3 nanocrystals under femtosecond laser excitation

5 years ago

The peak shift and evolution of upconversion luminescence from CsPbBr3 nanocrystals under femtosecond laser excitation

Weilong Liu, Qiuju Han, Yanqiang Yang, Wenzhi Wu

Compared with normal PL, a red shift of upconversion PL spectrum is observed. Time-resolved PL and TA spectroscopies show FWHM and peak position are changed at various times, which suggest the existence of more than single excited state.

Publisher URL: http://feeds.rsc.org/~r/rss/ra/~3/Br2_A3Bbqcg/C7RA06211G

DOI: 2017/RA/C7RA06211G

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