Near-Infrared Quantum Cutting Via Downconversion Energy Transfers In Ho3+/Yb3+ Codoped Tellurite Glass Ceramics

The different concentration of Ho3+/Yb3+ codoped tellurite glasses were prepared by high-temperature melting-quenching method. n excitation of Ho3+ ions with blue photon at 449nm, as well as ultraviolet photon at 360nm, the near infrared emission at 977 from Yb3+ and 981, 1020 nm from Ho3+, which could be absorbed by silicon and enhance the efficiency of the silicon-based solar cell, were observed. The energy-transfer process of Ho3+ and Yb3+ ions and involved mechanism have been investigated and discussed. The first order energy transfer through cross relaxation and a back energy transfer from Yb3+ to Ho3+ occurred in the near-infrared quantum cutting (NIR QC) system are proposed and verified.

Author
X Zhou Et Al
Origin
Chongqing University, China
Journal Title
Jacs 97 1 2014 179-184
Sector
Glass Ceramics
Class
GC 870

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Near-Infrared Quantum Cutting Via Downconversion Energy Transfers In Ho3+/Yb3+ Codoped Tellurite Glass Ceramics
Jacs 97 1 2014 179-184
GC 870
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