Temperature-dependent photoluminescence (PL) in a range of 77 K to room temperature (RT, 300 K) and time-resolved PL spectroscopy (TRPL) were used to study mechanochemically alloyed Cd_0.3Zn_0.7Se nanocrystals. The opto-physical properties such as exciton decay dynamics and emission characteristics were investigated. TRPL has been used to probe carrier relaxation of defect-related emissions while PL was used to monitor the evolution of such defects with continuous milling time. The TRPL emissions exhibit bi-exponential decay dynamics consisting of an initial fast component over a range of 0.05 – 0.87 ns and a slower component (0.76–1.60 ns). The PL lifetime for samples with 5, 10 and 20 h milling time were found to be 0.73, 1.14 and 1.44 ns respectively. The PL intensities and peak energy for the nanocrystals were discussed in details.

在77 K到室温（RT，300 K）范围内的温度依赖性光致发光（PL）和时间分辨PL光谱法（TRPL）用于研究机械化学合金化的Cd _0.3 Zn _0.7硒纳米晶体。研究了光物理性质，例如激子衰减动力学和发射特性。TRPL已被用于探测缺陷相关排放物的载流子弛豫，而PL被用于监测连续铣削时间下此类缺陷的演变。TRPL发射具有双指数衰减动力学，包括在0.05 – 0.87 ns范围内的初始快速分量和较慢的分量（0.76-1.60 ns）组成。研磨时间为5、10和20 h的样品的PL寿命分别为0.73、1.14和1.44 ns。详细讨论了纳米晶体的PL强度和峰值能量。