Enhanced cooperative near-infrared quantum cutting in Pr3+-Yb3+ co-doped phosphate glass

• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2012,（6）
• 页码范围: 453-455
• 页数: 3页
• 语种: 英文
• DOI: 10.1007/s11801-012-2294-6

摘要

Pr3+ and Yb3+ co-doped phosphate glasses are prepared to study their optical properties.Excitation and emission spectra and decay curves are used to characterize their luminescence.We demonstrate fiat upon excitation of Pr3+ ion with one high energy photon at 470 nm,two near-infrared (NIR) photons are emitted at 950-1100 nm (Yb3+∶2F5/2 → 2F7/2) through an efficient cooperative energy transfer (CET) from Pr3+ to Yb3+.The maximum energy transfer efficiency (ETE) and the corresponding quantum efficiency approach up to 90.17％ and 190.17％,respectively.The glass materials might find potential application for improving the efficiency of silicon-based solar cells.