In this contribution, we analyze the photogating effect in InP nanowire arrays with embedded InAsP quantum discs by detailed numerical modeling. The model comprises a drift-diffusion current coupled to the nonlinear Poisson equation, solved on a 2-dimensional geometry with rotational symmetry. By comparison to experimental data, surface trap states are identified that explain both the current versus voltage behavior in dark and under illumination. The current versus illumination power is highly nonlinear, and shows measured gain up to 320 for a power of 20 nW at 980 nm for an array of millions of wires.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.