Scanning photocurrent microscopy in semiconductor nanostructures

R Graham, D Yu - Modern Physics Letters B, 2013 - World Scientific
Scanning photocurrent microscopy (SPCM) is a powerful experimental tool used to
investigate spatially resolved optoelectronic properties of semiconductors and their …

Strong depletion in hybrid perovskite p–n junctions induced by local electronic do**

Q Ou, Y Zhang, Z Wang, JA Yuwono… - Advanced …, 2018 - Wiley Online Library
A semiconductor p–n junction typically has a do**‐induced carrier depletion region,
where the do** level positively correlates with the built‐in potential and negatively …

Hot carrier trap** induced negative photoconductance in InAs nanowires toward novel nonvolatile memory

Y Yang, X Peng, HS Kim, T Kim, S Jeon, HK Kang… - Nano …, 2015 - ACS Publications
We report a novel negative photoconductivity (NPC) mechanism in n-type indium arsenide
nanowires (NWs). Photoexcitation significantly suppresses the conductivity with a gain up to …

Unbalanced hole and electron diffusion in lead bromide perovskites

GA Elbaz, DB Straus, OE Semonin, TD Hull… - Nano …, 2017 - ACS Publications
We use scanning photocurrent microscopy and time-resolved microwave conductivity to
measure the diffusion of holes and electrons in a series of lead bromide perovskite single …

Liquid‐Alloy‐Assisted Growth of 2D Ternary Ga2In4S9 toward High‐Performance UV Photodetection

F Wang, T Gao, Q Zhang, ZY Hu, B **, L Li… - Advanced …, 2019 - Wiley Online Library
Abstract 2D ternary systems provide another degree of freedom of tuning physical properties
through stoichiometry variation. However, the controllable growth of 2D ternary materials …

MoS2 Heterojunctions by Thickness Modulation

M Tosun, D Fu, SB Desai, C Ko, J Seuk Kang… - Scientific reports, 2015 - nature.com
In this work, we report lateral heterojunction formation in as-exfoliated MoS2 flakes by
thickness modulation. Kelvin probe force microscopy is used to map the surface potential at …

Limits of Carrier Diffusion in n-Type and p-Type CH3NH3PbI3 Perovskite Single Crystals

OE Semonin, GA Elbaz, DB Straus… - The journal of …, 2016 - ACS Publications
Using a combination of scanning photocurrent microscopy (SPCM) and time-resolved
microwave conductivity (TRMC) measurements, we monitor the diffusion and recombination …