Related Experiment Video
Updated: Sep 27, 2025
08:07
Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates
Published on: June 18, 2013
15.2K
Long-Term Stability and Optoelectronic Performance Enhancement of InAsP Nanowires with an Ultrathin InP Passivation
LuLu Chen1, Stephanie O Adeyemo2, H Aruni Fonseka3
1School of Micro-Nano Electronics, Zhejiang University, Hangzhou, Zhejiang 311200, China.
Nano Letters
|April 14, 2022
Summary
Ultrathin Indium Phosphide (InP) passivation layers effectively protect narrow nanowires (NWs). This surface passivation enhances optoelectronic performance and thermal stability for room-temperature operation.
Area of Science:
- Materials Science
- Nanotechnology
- Semiconductor Physics
Background:
- Surface states significantly degrade optoelectronic performance in narrow-diameter nanowires (NWs).
- Effective long-term surface passivation of NWs is challenging without compromising other properties.
Purpose of the Study:
- To develop an effective and stable surface passivation strategy for narrow-diameter nanowires.
- To improve the optoelectronic performance and thermal stability of InAsP nanowires.
Main Methods:
- Application of an ultrathin Indium Phosphide (InP) passivation layer (2-3 nm) onto InAsP nanowires.
- Characterization of surface recombination velocity, charge carrier lifetime, and thermal performance.
Main Results:
- Reduced surface recombination velocity by over 70% in 30-40 nm diameter InAsP nanowires.
- Increased charge carrier lifetime by a factor of 3.
- Maintained passivation effectiveness for over 3 years in ambient conditions.
- Extended operating temperature from below 150 K to room temperature.
Conclusions:
- Ultrathin InP passivation is a viable method for enhancing narrow-diameter NWs.
- Achieved high-performance, stable, room-temperature NW devices.
- Opens new possibilities for advanced NW-based electronic and optoelectronic applications.
