CsPbBr 3 colloidal quantum dots have been synthesized by hot-injection method showing spherical shape with an average diameter of ∼10.5 nm. UV–vis absorption of CsPbBr 3 colloidal quantum dots shows a broad spectrum with an optical bandgap of ∼2.3682 eV. The steady-state photoluminescence measurement reveals a narrow emission peak at 2.352 eV with full-width at half maximum of 0.113 eV. Absolute photoluminescence quantum yield of colloidal quantum dots dispersed in poly(methyl methacrylate) was found to be 60 ± 1%. The time-resolved photoluminescence data recorded at 266 nm excitation were well fitted using a mono-exponential curve with a decay time of 25.36 (5) ns. A luminescent solar concentrator was fabricated using colloidal quantum dots in transparent poly(methyl methacrylate) polymer uniformly coated over glass substrate that shows an external optical conversion efficiency of ∼5.4% under one sun illumination. The experimental results presented in this ma...

中文翻译：

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使用 CsPbBr3 胶体量子点进行发光太阳能聚光器的光管理。

CsPbBr 3 胶体量子点采用热注射法合成，呈球形，平均直径约为10.5 nm。CsPbBr 3 胶体量子点的紫外-可见吸收显示出宽光谱，光学带隙约为 2.3682 eV。稳态光致发光测量显示在 2.352 eV 处有一个窄发射峰，半峰全宽为 0.113 eV。发现分散在聚（甲基丙烯酸甲酯）中的胶体量子点的绝对光致发光量子产率为 60 ± 1%。使用衰减时间为 25.36 (5) ns 的单指数曲线很好地拟合了在 266 nm 激发下记录的时间分辨光致发光数据。使用均匀涂覆在玻璃基板上的透明聚（甲基丙烯酸甲酯）聚合物中的胶体量子点制造了一种发光太阳能聚光器，该聚光器在一次阳光照射下显示出约 5.4% 的外部光学转换效率。实验结果在这个ma...