Zn3As2 Nanowires and Nanoplatelets: Highly Efficient Infrared Emission and Photodetection by an Earth Abundant Material

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• 作者：Tim Burgess ; Philippe Caroff ; Yuda Wang ; Bekele H. Badada ; Howard E. Jackson ; Leigh M. Smith ; Yanan Guo ; Hark Hoe Tan ; Chennupati Jagadish
• 刊名：Nano Letters
• 出版年：2015
• 出版时间：January 14, 2015
• 年：2015
• 卷：15
• 期：1
• 页码：378-385
• 全文大小：548K
• ISSN：1530-6992

文摘

The development of earth abundant materials for optoelectronics and photovoltaics promises improvements in sustainability and scalability. Recent studies have further demonstrated enhanced material efficiency through the superior light management of novel nanoscale geometries such as the nanowire. Here we show that an industry standard epitaxy technique can be used to fabricate high quality II鈥揤 nanowires (1D) and nanoplatelets (2D) of the earth abundant semiconductor Zn₃As₂. We go on to establish the optoelectronic potential of this material by demonstrating efficient photoemission and detection at 1.0 eV, an energy which is significant to the fields of both photovoltaics and optical telecommunications. Through dynamical spectroscopy this superior performance is found to arise from a low rate of surface recombination combined with a high rate of radiative recombination. These results introduce nanostructured Zn₃As₂ as a high quality optoelectronic material ready for device exploration.