Structure and luminescence properties of CdSe/CdS-cellulose nanocomposites

We have observed the structure and luminescence properties of CdSe/CdS-cellulose nanocomposites (CCCNC) and characterized it. The CCCNC is composed of two component materials, nanocrystalline CdSe/CdS core–shell QDs and nanocrystalline cellulose. The structural and optical characteristics of CCCNC were analysed using XRD, TEM, PL and I–V characteristic techniques. A spherical phosphor particle of dimension about 14 nm was confirmed by TEM. The characteristic X-ray diffraction planes of the said QDs as (100), (002) and (101) were found out to be superimposed at the tail of the most intense plane (002) of cellulose. Sharp photoluminescence peak at 650 nm and absorption spectra indicate that the distributions of quantum size possess rigid structure of the entire shell. It is expected that the present study will have high promise for X-ray-induced photoluminescence-based sensing application.