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Synthesis and Characterization of Ag_8(Ge_(1-x),Sn_x)(S_(6-y),Se_y) Colloidal Nanocrystals

机译:Ag_8(Ge_(1-x),Sn_x)(S_(6-y),Se_y)胶态纳米晶体的合成与表征

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摘要

A facile colloidal approach to synthesize Ag_8(Ge_(1-x),Sn_x)(S_(6-y),Se_y) nanocrystals (NCs) in a highly controlled way across the entire compositional ranges (0 ≤x≤ 1, 0≤y≤6) has been developed. The NCs exhibit a uniform size distribution, highly crystalline structure, over 1 g scalable synthesis, and tunable band gaps in the range of 0.88–1.45 eV by varying their chemical compositions. The Ag_8GeS_6 NCs with a band gap of approximately 1.45 eV were employed as a model light harvester to assess their applicability in solar cells by a full solution-processing device, yielding an efficiency of 0.28% under AM1.5 illumination, demonstrating their application potential in solar energy utilization.
机译:在整个组成范围(0≤x≤1,0≤范围内)以高度受控的方式合成Ag_8(Ge_(1-x),Sn_x)(S_(6-y),Se_y)纳米晶体(NC)的简便胶体方法y≤6)已经开发。通过改变其化学成分,NCs表现出均匀的尺寸分布,高度结晶的结构,超过1 g的可扩展合成以及在0.88–1.45 eV范围内的可调带隙。带隙约为1.45 eV的Ag_8GeS_6 NC被用作模型光收集器,以通过完整的溶液处理设备评估其在太阳能电池中的适用性,在AM1.5光照下的效率为0.28%,证明了其在太阳能电池中的应用潜力。太阳能利用。

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