Pieoztronic and piezo-phototronic are two emerging fields of flexible electronics and nanoelectronics using by piezoelectric semiconductor materials, such as ZnO, GaN, InN and CdS. Recent experiments shown piezoelectric and semiconductor properties of monolayer MoS 2, which have been applied as nanogenertor and piezotronic transistor. Two-dimensional piezoelectric semiconductor can be utilized for high-performance photovoltaic devices. In this paper, a two-dimensional material piezo-phototronic solar cell is studied theoretically based on a monolayer MoS 2 metal-semiconductor contact. The current-voltage characteristics, open circuit voltage, maximum output power, fill factor and power conversion efficiency have been studied for the piezo-phototronic solar cell. The modulation level of piezo-phototronic effect is presented to evaluate the performance under applied strain. The piezo-phototronic effect can increase the open circuit voltage 5.8% at strain of 1%. This principle can be a new way to develop high-performance two-dimensional solar cells.

A novel piezo-phototronic effect enhanced photodetector based on MAPbI3 polycrystalline perovskite is designed and fabricated with reconfigurable piezoelectric performance.

2018). Ultra-high sensitivity strain sensor based on piezotronic bipolar transistor. Nano Energy, 50,[744][745][746][747][748][749] http://dx.

The luminescence of semiconductor quantum dot (QD) can be adjusted by piezotronic effect. An external mechanical force applied on the QD generates piezoelectric potential, which alters the luminescence of the QD. A small mechanical force may induce significant change on the emission spectrum. For InN QD case, it is demonstrated that the un-forced emission wavelength is more than doubled by a 1 μN force. The strategy of using piezotronic effect to tune the colour of the emission leads to promising noncontact force measurement applications in biological, medical sensors and force sensitive displays. More piezoelectric semiconductor materials have been investigated in terms of the tuneability of the emission wavelength in the presence of an external applied force. It is found that CdS and CdSe demonstrate much higher tuneability δλ/δF, which will lead to micro/nano-newton force measurement applications.