Changcheng Zheng

Conference Proceedings of SPIE the International Society for Optical Engineering · September 16, 2025 The accumulation of plastics in the environment and their fragmentation into micro- and nanoplastics represent a growing ecological and public health concern. Accurate detection and classification of these particles remain challenging due to their small si ... Full text Cite

Who make transparent ZnO colorful? – Ion implantation and thermal annealing effects

Conference Superlattices and Microstructures · November 1, 2016 ZnO has re-attracted considerable interest as a wide band gap semiconductor and energy material in recent years. When most of the near-band-edge exciton sharp lines in the ultraviolet spectral region have been firmly identified, defect origins of broad col ... Full text Cite

Strain status in Fe- and Si- doped GaN epilayers grown on sapphire

Conference Optoelectronic Devices and Integration Oedi 2015 · January 1, 2015 The effect of Fe doping on a series of Fe-doped GaN epilayers with difference doping concentrations were studied by Raman spectroscopy with comparison to Si-doped GaN samples. Compressive strain in Fe-dope GaN tend to relax. ... Full text Cite

Strain status in Fe- And Si- doped GaN epilayers grown on sapphire

Conference Photonics for Energy Pfe 2015 · January 1, 2015 The effect of Fe doping on a series of Fe-doped GaN epilayers with difference doping concentrations were studied by Raman spectroscopy with comparison to Si-doped GaN samples. Compressive strain in Fe-dope GaN tend to relax. ... Cite