342 citations · 942 across the 14 of their papers we have counts for
14 papers
Electronic Trap Detection with Carrier-Resolved Photo-Hall Effect
Oki Gunawan, Chaeyoun Kim, Bonfilio Nainggolan +11
Electronic trap states are a critical yet unavoidable aspect of semiconductor devices, impacting performance of various electronic devices such as transistors, memory devices, sola…
Variable Temperature and Carrier-Resolved Photo-Hall Measurements of High-Performance Selenium Thin-Film Solar Cells
Rasmus Svejstrup Nielsen, Oki Gunawan, Teodor Todorov +3
Selenium is an elemental semiconductor with a wide bandgap suitable for a range of optoelectronic and solar energy conversion technologies. However, developing such applications re…
Magnetic Tip Trap System
Oki Gunawan, Jason Kristiano, Hendra Kwee
We report a detailed theoretical model of recently-demonstrated magnetic trap system based on a pair of magnetic tips. The model takes into account key parameters such as tip diame…
Carrier-Resolved Photo Hall Measurement in World-Record-Quality Perovskite and Kesterite Solar Absorbers
Oki Gunawan, Seong Ryul Pae, Douglas M. Bishop +8
Majority and minority carrier properties such as type, density and mobility represent fundamental yet difficult to access parameters governing semiconductor device performance, mos…
Suns-V characteristics of high performance kesterite solar cells
Oki Gunawan, Tayfun Gokmen, David B. Mitzi
Low open circuit voltage () has been recognized as the number one problem in the current generation of CuZnSn(Se,S) (CZTSSe) solar cells. We report high light i…
A Diamagnetic Trap with 1D Camelback Potential
Oki Gunawan, Yudistira Virgus
The ability to trap matter is of great importance in experimental physics since it allows isolation and measurement of intrinsic properties of the trapped matter. We present a stud…