CAJ | 학술논문

采用高温固相反应法合成了YAG∶0.02Cr3＋，yYb3＋系列粉末材料，研究了该系列材料在近红外区域的发光特性，主要包括Cr3＋，Yb3＋的发光性质、Cr3＋∶4 T2和Yb3＋∶2 F5／2能级辐射跃迁寿命以及其布居时间的比较，给出了Yb3＋最佳掺杂量为10％。实验表明：通过Cr3＋→Yb3＋能量传递，实现了Yb3＋在1000 nm附近近红外发光的增强，这对进一步提高c-Si太阳能电池转换效率打下了坚实基础。
채용고온고상반응법합성료YAG∶0.02Cr3＋，yYb3＋계렬분말재료，연구료해계렬재료재근홍외구역적발광특성，주요포괄Cr3＋，Yb3＋적발광성질、Cr3＋∶4 T2화Yb3＋∶2 F5／2능급복사약천수명이급기포거시간적비교，급출료Yb3＋최가참잡량위10％。실험표명：통과Cr3＋→Yb3＋능량전체，실현료Yb3＋재1000 nm부근근홍외발광적증강，저대진일보제고c-Si태양능전지전환효솔타하료견실기출。
YAG∶0.02 Cr3+, yYb3+ powder samples are prepared by high temperature solid-phase reaction method in this paper .Near-infrared emission properties of these powder materials are investigated including e-mission properties of Cr 3+and Yb3+, luminescence lifetimes of Cr 3+∶4 T2 and Yb3+∶2 F5/2 and comparison of their population time.Optimal doping concentration of Yb3+(10%) is given.Experiments indicate that the broadband spectral conversion makes the Yb 3+∶2 F5/2→2 F7/2 radiation transition obtain a favorable increase a-round 1 000 nm by the efficient energy transfer from Cr 3+to Yb3+, which laids a solid foundation to enhance solar photovoltaic conversion efficiency .