Dou Xiaojing, Li Yang, Kang Ru, Lian Huiwang, Li Zhenzhang
School of Physics and Optoelectronic Engineering, Guangdong University of Technology Guangzhou 510006 China.
College of Mathematics and Systems Science, Guangdong Polytechnic Normal University No. 293, Zhongshan Avenue West, Tianhe District Guangzhou 510665 China
RSC Adv. 2020 May 1;10(29):17180-17184. doi: 10.1039/d0ra01926g. eCollection 2020 Apr 29.
Trivalent terbium-doped oxycarbonate (LaOCO:1%Tb) one-dimensional nanorods are synthesized a facile precipitation method. The average length of LaOCO:1%Tb nanorods is 184.5 nm. Doping Tb ions led to several visible emission peaks at 486 nm, 542 nm, and 587 nm under excitation of 258 nm wavelength light. The green afterglow at 542 nm can be detected almost 600 s after ceasing the UV-light irradiation. It can be calculated that the LaOCO:1%Tb sample has one shallow trap depth ( = 0.848 eV) by measuring the thermoluminescence. All the results indicate that a simple precipitation method can synthesize a one-dimensional nanorod with green persistent luminescence.
采用简便的沉淀法合成了三价铽掺杂的碳酸氧镧（LaOCO:1%Tb）一维纳米棒。LaOCO:1%Tb纳米棒的平均长度为184.5纳米。在波长为258纳米的光激发下，掺杂铽离子导致在486纳米、542纳米和587纳米处出现几个可见发射峰。在停止紫外光照射后近600秒仍可检测到542纳米处的绿色余辉。通过测量热释光可以计算出LaOCO:1%Tb样品具有一个浅陷阱深度（=0.848电子伏特）。所有结果表明，一种简单的沉淀法可以合成具有绿色持久发光的一维纳米棒。
