Ultrafast photocurrent and absorption microscopy of few-layer TMD devices isolate rate-limiting dynamics driving fast and efficient photoresponse

Kyle T. Vogt, Su-Fei Shi, Feng Wang +1

Despite inherently poor interlayer conductivity, photodetectors made from few-layer devices of 2D transition metal dichalcogenides (TMDs) such as WSe${}_2$ and MoS${}_2$ can still yiel…