Imagine a field of small wires-standing at attention like a tiny field of wheat-gathering the sun's rays as the first step in solar energy conversion.
Researchers at the
These compound semiconductors hold particular promise for applications involving light, such as solar cells or lasers.
"Over the past two decades, research in the field of semiconductor nanowires has helped reshape our understanding of atomic-scale crystal assembly and uncover novel physical phenomena at the nanometer scale," explained
"In this work, we have overcome the surprising structure (phase segregation) and successfully grown single phase InGaAs and demonstrated very promising solar cell performance," explained postdoctoral researcher Parsian Mohseni, first author of the study.
"Depending on the materials, nanowires can be used for functional electronics and optoelectronics applications."
Mohseni noted that the main benefits of this III-V photovoltaic solar cell design are that it is fairly low-cost, substrate-free and has a built-in back side contact, while being conducive to integration within other flexible device platforms.
Li's research group uses a method called
In their earlier work (
InGaAs NW arrays are vertical, non-tapered, controllable in size, height, and doping, and broadly tunable in composition thus energy for monolithic heterogeneous integration with 2D
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