Upconversion mechanisms in rare-earth doped glasses to improve the efficiency of silicon solar cells

The electronic energy transfer properties between Ho 3+ and Yb 3+ ions have been studied in a fluoroindate glass for solar cell applications. The Ho 3+ ions absorb infrared radiation at around 1150 nm, below the energy gap of Si solar cells. Energy transfer between Ho 3+ and Yb 3+ ions produces an u...

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