Photoconductivity Multiplication in Semiconducting Few-Layer MoTe2

• Published in: Nano letters Vol. 20; no. 8; pp. 5807 - 5813
• Main Authors: Zheng, Wenhao, Bonn, Mischa, Wang, Hai I
• Format: Journal Article
• Language: English
• Published: American Chemical Society 12.08.2020
• Subjects: Letter; impact ionization; terahertz spectroscopy; carrier multiplication; transition metal dichalcogenides (TMDCs); 2D materials; MoTe2

We report efficient photoconductivity multiplication in few-layer 2H-MoTe2 as a direct consequence of an efficient steplike carrier multiplication with near unity quantum yield and high carrier mobility (∼45 cm2 V–1 s–1) in MoTe2. This photoconductivity multiplication is quantified using ultrafast,...