U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by:

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 1 - 9 of 9

Vertical 2D/3D Semiconductor Heterostructures based on Epitaxial Molybdenum Disulfide and Gallium Nitride

February 19, 2016
Author(s)
Dmitry A. Ruzmetov, Kehao Zhang, Gheorghe Stan, Berc Kalanyan, Ganesh R. Bhimanapati, Sarah M. Eichfeld, R A. Burke, Pankaj B. Shah, Terrance P. O'Regan, Frank J. Crowne, A. Glen Birdwell, Joshua A. Robinson, Albert Davydov, Tony G. Ivanov
When designing semiconductor heterostructures, it is expected that epitaxial alignment will facilitate low-defect interfaces and efficient vertical transport. Here, we report lattice-matched epitaxial growth of molybdenum disulfide (MoSub2) directly on

Miniature all-solid-state heterostructure nanowire Li-ion batteries as a tool for engineering and structural diagnostics of nanoscale electrochemical processes.

August 15, 2014
Author(s)
Vladimir P. Oleshko, Thomas F. Lam, Dmitry A. Ruzmetov, Paul M. Haney, Henri J. Lezec, Albert Davydov, Sergiy Krylyuk, John Cumings, Albert A. Talin
Complex interfacial phenomena and phase transformations that govern the operation of Li-ion batteries (LiBs) require detailed nanoscale 3D structural and compositional characterization that can be directly related to the capacity and electrical transport

Analytical Electron Microscopy of Semiconductor Nanowire Functional Materials and Devices for Emerging Applications.

October 2, 2013
Author(s)
Vladimir P. Oleshko, Elissa H. Williams, Albert Davydov, Sergiy Krylyuk, Abhishek Motayed, Dmitry A. Ruzmetov, Thomas F. Lam, Henri J. Lezec, Albert A. Talin
Functionalized individual semiconductor nanowires (SNWs) and 3D SNW arrays attract a continuously growing interest for applications in optoelectronics, sensing, and energy storage. High-resolution field-emission analytical (S)TEM enables critical insights

Local electrical characterizations of cadmium telluride solar cells using low energy electron beam

October 1, 2013
Author(s)
Heayoung Yoon, Paul M. Haney, Dmitry A. Ruzmetov, Hua Xu, Marina S. Leite, Behrang H. Hamadani, Albert A. Talin
We investigate local electronic properties of cadmium telluride solar cells using electron beam induced current (EBIC) measurements with current-collecting patterned contacts. EBIC measurements are performed with a spatial resolution as high as ≈20 nm both

High-Resolution Local Current Measurement of CdTe Solar Cells

October 4, 2012
Author(s)
Heayoung Yoon, Dmitry A. Ruzmetov, Paul M. Haney, Marina S. Leite, Behrang H. Hamadani, Albert A. Talin, Nikolai B. Zhitenev
We investigate local electronic properties of CdTe solar cells using electron beam to excite electron-hole pairs and evaluate spatially resolved photocurrent characteristics. Standard semiconductor processes were used to fabricate Ohmic metal contacts on

Electrolyte stability determines scaling limits for solid-state 3D Li-ion batteries

December 20, 2011
Author(s)
Dmitry A. Ruzmetov, Vladimir P. Oleshko, Paul M. Haney, Henri J. Lezec, K Karki, K Baloch, Amit K. Agrawal, Albert Davydov, Sergiy Krylyuk, Y Liu, JY Huang, Mihaela M. Tanase, John Cumings, Albert A. Talin
Rechargeable, all-solid state Li-ion batteries (LIBs) with high specific capacity and small footprint are highly desirable to power an emerging class of miniature, autonomous microsystems that operate without a hardwire for power or communications. A