72 citations · 125 across the 7 of their papers we have counts for
8 papers
Electrochemical reactions under reverse bias create additional mobile ions that enable hole tunneling in metal halide perovskite diodes
Kell Fremouw, Ryan A. DeCrescent, Xianfu Zhang +11
Gradual reverse-bias breakdown in metal-halide perovskite diodes and solar cells is thought to originate from hole tunneling through steep bands in an ionic depletion region near t…
Degradation Dynamics of Perovskite Solar Cells Under Fixed Reverse Current Injection
Fangyuan Jiang, Haruka Koizumi, Hannah Contreras +8
Previous studies of reverse-bias stability in perovskite solar cells have focused primarily on voltage controlled reverse-bias tests. Here we instead present an investigation of pe…
Monolithic Polarizing Circular Dielectric Gratings on Bulk Substrates for Improved Photon Collection from InAs Quantum Dots
Ryan A. DeCrescent, Zixuan Wang, Poolad Imany +3
III-V semiconductor quantum dots (QDs) are near-ideal and versatile single-photon sources. Because of the capacity for monolithic integration with photonic structures as well as op…
Ferroelastic Hysteresis in Thin Films of Methylammonium Lead Iodide
Rhys M. Kennard, Clayton J. Dahlman, Ryan A. DeCrescent +4
Mechanical strain can modify the structural and electronic properties of methylammonium lead iodide MAPbI3. The consequences of ferroelastic hysteresis, which involves the retentio…
Tamm plasmons in metal/nanoporous GaN distributed Bragg reflector cavities for active and passive optoelectronics
Guillaume Lheureux, Morteza Monavarian, Ryan Anderson +7
We investigate Tamm plasmon (TP) modes in a metal/semiconductor distributed Bragg reflector (DBR) interface. A thin Ag (silver) layer with an optimized thickness (~ 55 nm from simu…
Unidirectional Luminescence from Quantum Well Metasurfaces
Prasad P. Iyer, Ryan A. DeCrescent, Nikita A. Butakov +6
III-Nitride light emitting diodes (LEDs) are the backbone of ubiquitous lighting and display applications. Imparting directional emission is an essential requirement for many LED i…