Abstract Synthesis and characterization of SrCrO4 activated with rare earth Nd3+ and Yb3+ is reported for the first time. Interesting luminescence properties have been observed for the synthesized phosphors. Host sensitized near infrared (NIR) emission is observed for Yb3+ doped phosphor which occurs as a result of cooperative energy transfer. Downshifted Nd3+ emission which is again in the NIR region can be excited by f-f transitions as well as by host absorption followed by energy transfer. The excitation spectra of these phosphors cover 350–500 nm region showing excellent overlap with solar spectrum that is not efficiently converted by c-Si solar cells. Emission is around 1 μm where photovoltaic conversion of c-Si is most efficient. These properties make them suitable as downshifting/downconversion phosphors for c-Si solar cells.

中文翻译：

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用于设计用于修改太阳光谱的荧光粉的半导体主机

摘要 首次报道了稀土Nd3+和Yb3+活化SrCrO4的合成与表征。已经观察到合成的磷光体的有趣的发光特性。对于 Yb3+ 掺杂的磷光体，观察到主体敏化近红外 (NIR) 发射，这是协同能量转移的结果。再次处于 NIR 区域的下移 Nd3+ 发射可以通过 ff 跃迁以及主体吸收和能量转移来激发。这些磷光体的激发光谱覆盖了 350-500 nm 区域，显示出与 c-Si 太阳能电池无法有效转换的太阳光谱极好的重叠。发射约为 1 μm，其中 c-Si 的光伏转换效率最高。这些特性使其适合用作 c-Si 太阳能电池的降档/降频转换磷光体。