Piezotronics and piezo-phototronics in two-dimensional materials

Yudong Liu, Erlin Tresna Nurlianti Wahyudin, Jr-Hau He, Junyi Zhai

Research output: Contribution to journalArticlepeer-review

30 Citations (SciVal)


This article discusses recent studies of piezotronics and piezo-phototronics of two-dimensional (2D) materials. Two-dimensional semiconductor materials have demonstrated excellent electronic and optoelectronic properties, and these ultrathin materials are candidates for next-generation devices. Among 2D semiconductors, transition-metal dichalcogenides in particular have large in-place piezoelectricity due to the noncentrosymmetry along the armchair direction. A strong coupling of piezoelectric and semiconducting properties has been reported for Schottky contacts and p-n junctions, even in single-layer materials. Since the carrier concentration of ultrathin 2D materials can be easily modulated by external piezocharges, layered composites of ferroelectric/2D materials also show promising piezotronic and piezo-phototronic properties.
Original languageEnglish (US)
Pages (from-to)959-964
Number of pages6
JournalMRS Bulletin
Issue number12
StatePublished - Dec 10 2018


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