An intense broadband sensitized near-infrared luminescence from Yb3+ and Bi3+ co-doped zeolite L crystals

Herein we show Yb3+-Bi3+ co-doped zeolilte L hybrid materials with a strong, long-lived, and intense broadband tunable NIR photoluminescence (PL) through the energy transfer from Bi3+ to Yb3+ resulting from one Bi3+ ion exciting two Yb3+ ions simultaneously. Such a luminescence hybrid material (Yb1Bix@ZL) could be a deserving material for c-Si solar cells for efficient conversion of 300-450 nm light which was not fully utilized by the existing solar cells to 1000 nm NIR light.187