State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
Opt Lett. 2011 Aug 1;36(15):2767-9. doi: 10.1364/OL.36.002767.
Yb(3+)-doped glass and glass ceramic containing ZnO nanocrystals were prepared by the melting-quenching method and subsequent heat treatment. Intense near-IR emission around 1000 nm that originated from the transition of Yb(3+):(2)F(5/2)→(2)F(7/2) was generated as a result of energy transfer from oxygen interstitials in ZnO nanocrystals to Yb(3+) with energy transfer efficiency of about 10%. The quantum yield for the near-IR emission of Yb(3+) under the excitation of 390 nm was about 16.7%. These materials have potential application in achieving high-efficiency Si solar cells via spectrum modification.
采用熔融淬冷法并随后进行热处理，制备了掺 Yb(3+)的 ZnO 纳米晶玻璃和玻璃陶瓷。由于 ZnO 纳米晶中氧间隙向 Yb(3+)的能量转移，产生了源于 Yb(3+)：(2)F(5/2)→(2)F(7/2)跃迁的近红外区 1000nm 左右的强发射，能量转移效率约为 10%。在 390nm 激发下，Yb(3+)的近红外发射量子产率约为 16.7%。这些材料在通过光谱改性实现高效硅太阳能电池方面具有潜在应用。
