Continuous‐wave laser irradiation to form Cd_1−xZn_xSe shell on CdSe QDs in silicate glasses

Abstract

CdSe QDs with Cd 1−x Zn x Se shell structures were precipitated inside silicate glasses by continuous-wave laser irradiation (λ = 532 nm) without any heat-treatment process. Emission from the surface defects (λ ≈ 620 nm) was quenched significantly and the lifetimes of the band-edge emission was increased. During the laser irradiation, Zn ions were gradually incorporated into the outer region of CdSe QDs to form Cd 1−x Zn x Se (0.76 ≤ x ≤ 0.8) alloy shells.

CdSe and CsPbBr3 quantum dot Co-doped monolithic glasses as tunable wavelength convertors

“…At this point, glass hosts step forward due to their reliable protection features [10]. There are plenty of research on the synthesis of CdSe or CsPbBr 3 QDs in various glass hosts and evaluation of their utilization in various photonic and opto-electronic applications [11][12][13][14][15][16][17][18][19][20]. Recently, PLQY values of CsPbBr 3 QDs synthesized in glass hosts are reported to approach 100% and CdSe/Cd 1−x Zn x Se core/shell structures provide PLQY values over 50% when they are successfully engineered in a glass host [6,7].…”