1.http://www.sciencedirect.com/science/article/pii/S0272884214013534

Multi-wavelength-driven solar spectral conversion in P₂O₅–ZnO–Li₂O glasses for improving greenhouse photosynthetic activity

Abstract

The highest quantum efficiency among amorphous materials was recently observed in thens²-type Sn²⁺ activators doped ZnO–P₂O₅ glass system, which is comparable to the MgWO₄ crystal. In this paper, Mn²⁺/Sn²⁺-codoped low-melting 44P₂O₅–36ZnO–20Li₂O (PZL) glasses were prepared by the melt-quenching method to explore blue and red emission materials for greenhouse. Photoluminescence properties of the PZL glasses were investigated systematically by decay curves and absorption, excitation, and emission spectra. The glasses have high optical transparency in the visible region, and can emit intense red light excited at 300, 354, 409, and 505 nm. Significantly, upon 300 nm excitation, dual blue/red emissions were achieved. Moreover, the ratio of red to blue light could be tuned by adjusting the energy-transfer (ET) of Sn²⁺→Mn²⁺ through simply adjusting the content of Mn²⁺. Our research extends the utilization of solar energy in glass greenhouse for plant cultivation.

2. http://jss.ecsdl.org/content/3/5/R89.short

Deep-UV-Driven Emission-Tailorable Borosilicate Glasses by Utilization of Sn2+ Cations as Versatile Energy-Transfer Establishers

3.http://www.sciencedirect.com/science/article/pii/S0022309313006078

Tunable full-color emitting borosilicate glasses via utilization of Ce^{3 +} ions as multiple energy transfer contributors

Efficient multi-wavelength-driven spectral conversion from ultraviolet to visible in transparent borosilicate glasses

Abstract

The emission properties of borosilicate glasses containing Mn²⁺ and rare-earth (RE) ions (Sm³⁺, Eu²⁺, Eu³⁺, Tb³⁺) were demonstrated. The self-reduction from Eu³⁺ to Eu²⁺ was observed and discussed. Results indicate that the red fluorescence of Eu³⁺ and blue emission from Eu²⁺ can be tailored by tuning the ratio of B₂O₃ to CaO. Moreover, by co-doping Mn²⁺ with Sm³⁺ and Eu^2+,3+, a flexible prototype is proposed to improve photosynthesis of green plants by turning ultraviolet (UV) light into dual red/blue lights. Besides, the energy-transfer (ET) of Tb³⁺→Sm³⁺ was investigated, and a wide-range-tunable full-color-emitting was obtained in Eu²⁺–Tb³⁺–Sm³⁺ tri-doped glasses via precisely tuning the co-activators. Our research extends the potential application of these glasses in greenhouse for plant cultivation and general illumination.