Probing Quasiparticle Transport Using Spatially Resolved Ultrafast Spectroscopy
Abstract
Establish an all optical method that is capable of detecting ballistic and diffusive quasiparticle transport and apply this method to study quasiparticle transport and dynamics in atomically thin transition metal dichalcogenides (TMDs). A spatially resolved pumpprobe technique will be used to measure exciton and trion mobility in MoSe2 and WSe2 in a specially designed sample cell that avoids exposure to ambient environment. Different layered structures prepared with different methods including mechanical exfoliation, Van der Waals epitaxy, chemical vapor deposition, and physical vapor deposition will be examined. The effect of coherent coupling between exciton and trion on transport properties will be measured by changing excitation conditions.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 12, 2017
- Source ID
- W911NF1510088
Entities
People
- Xiaoqin Li
Organizations
- Army Contracting Command
- United States Army
- University of Texas at Austin