Threading dislocations related persistent photoconductivity effect in hydride vapor phase epitaxy grown GaN epilayersKai Qiu, X. H. Li, Z. J. Yin, X. C. Cao, Q. F. Han, C. H. Duan, X. J. Zhou, M. Liu, T. F. Shi, X. D. Luo and Y. Q. WangEPL, 82 1 (2008) 18002DOI: https://doi.org/10.1209/0295-5075/82/18002