Quynh, Ta Duy, Luu Thi Lan Anh, and Nguyen Sang Xuan. 2021. “On the Contribution Factors of Enhanced Photocatalytic Activity of Doped Semiconductors: Structural and Optical Investigation of Cu2+ Doped ZnO Nanoparticles”. <i>Vietnam Journal of Science and Technology</i> 59 (3). Hanoi, VN:277-89. https://doi.org/10.15625/2525-2518/59/3/15490.