Theory of piezotronics and piezo-phototronics

Zhang, Yan; Leng, Yongsheng; Willatzen, Morten; Huang, Bolong

doi:10.1557/mrs.2018.297

Cited by 72 publications

(31 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 20 ] Since then, significant progresses have been made in research such as nanogenerators, strain sensors, piezotronic field‐effect transistors, solar cells, light‐emitting diodes, strain‐gated vertical nanowire arrays, and other devices. [ 10,21 ] Afterward, the concept of piezo‐phototronics was first proposed by Prof. Wang in 2010. [ 13 ] Piezo‐phototronics mainly focuses on modulating piezoelectric charges/piezopotential to tune the charge migration behaviors (separation, transportation, and recombination) and redox kinetics, which is simultaneously based on a coupling construction of semiconducting, photoexciting, and piezoelectric properties.…”

Section: Fundamentals Of Piezo‐phototronic Effect On Photoinduced Catmentioning

confidence: 99%

“…In summary, there are two typical features of piezotronics and piezo‐phototronics: i) piezoelectric materials usually needs an external mechanical stimuli (or heat for pyroelectric materials) to generate polarization charges; ii) the accompanying built‐in electric field controls the migration of carriers in space charge region and affects redox kinetics at surface of metal–semiconductor contacts or semiconductor–semiconductor heterojunctions. [ 10,14 ]…”

Section: Fundamentals Of Piezo‐phototronic Effect On Photoinduced Catmentioning

confidence: 99%

“…Moreover, the Schottky barrier height at metal/ZnO contacts depends on the size of contacts and the mechanical stability at interface during repeated external loadings. [ 10 ]…”

Section: Fundamentals Of Piezo‐phototronic Effect On Photoinduced Catmentioning

confidence: 99%

“…Piezotronic and piezo‐phototronic effects here offer a basic guideline in modulating the coupling effect between piezopotential and semiconductor properties in energy harvesting. [ 10,11 ] The piezopotential and subsequent band level rearrangement are sensitively dependent on the continuity of occupied electronic states and the amount of free charges in piezoelectric semiconductors. [ 12 ]…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Advances in Piezo‐Phototronic Effect Enhanced Photocatalysis and Photoelectrocatalysis

Pan

Sun

Chen

et al. 2020

Advanced Energy Materials

431

236

View full text Add to dashboard Cite

The storage/utilization of solar energy is a promising strategy to alleviate current disparities in energy shortage Direct conversion of solar light into chemical energy by means of photocatalysis or photoelectrocatalysis is currently a point of focus for sustainable energy development and environmental remediation. However, its current efficiency is still far from satisfying, suffering especially from severe charge recombination. To solve this problem, the piezo-phototronic effect has emerged as one of the most effective strategies for photo(electro)catalysis. Through the integration of piezoelectricity, photoexcitation, and semiconductor properties, the built-in electric field by mechanical stimulation induced polarization can serve as a flexible autovalve to modulate the charge-transfer pathway and facilitate carrier separation both in the bulk phase and at the surfaces of semiconductors. This review focuses on illustrating the trends and impacts of research based on piezo-enhanced photocatalytic reactions. The fundamental mechanisms of piezo-phototronics modulated band bending and charge migration are highlighted. Through comparing and classifying different categories of piezo-photocatalysts (like the typical ZnO, MoS 2 , and BaTiO 3 ), the recent advances in polarization-promoted photo(electro)catalytic processes involving water splitting and pollutant degradation are overviewed. Meanwhile the optimization methods to promote their catalytic activities are described. Finally, the outlook for future development of polarization-enhanced strategies is presented.

show abstract

Section: Fundamentals Of Piezo‐phototronic Effect On Photoinduced Catmentioning

confidence: 99%

Section: Fundamentals Of Piezo‐phototronic Effect On Photoinduced Catmentioning

confidence: 99%

“…Moreover, the Schottky barrier height at metal/ZnO contacts depends on the size of contacts and the mechanical stability at interface during repeated external loadings. [ 10 ]…”

Section: Fundamentals Of Piezo‐phototronic Effect On Photoinduced Catmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Advances in Piezo‐Phototronic Effect Enhanced Photocatalysis and Photoelectrocatalysis

Pan

Sun

Chen

et al. 2020

Advanced Energy Materials

431

236

View full text Add to dashboard Cite

show abstract

“…For a one‐dimensional model, the built‐in potential φ bi is given by

φ_{bi} = \frac{q}{2 ε_{normals}} (N_{A} W_{normalDp}^{2} + ρ_{normalpolar} W_{normalpolar}^{2} + N_{D} W_{normalDn}^{2})

…”

Section: Resultsmentioning

confidence: 99%

Reversible Conversion between Schottky and Ohmic Contacts for Highly Sensitive, Multifunctional Biosensors

Zhao

Meng

et al. 2019

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

Schottky and Ohmic contacts-based electronics play an important role in highly sensitive detection of biomolecules and neural electric impulses, respectively. The reversible conversion between these two contacts appears especially important for multifunctional sensing by just one biosensor. Here, Schottky barrier height (SBH) is successfully tuned by triboelectric nanogenerator (TENG) and the same device is made to achieve reversible conversion between Schottky contact and Ohmic contact. In the same Schottky to Ohmic reversible (SOR) biosensor, highly sensitive detections of biomolecule (i.e., neurotransmitter) and neural electric signal are achieved at different contact states. The SOR biosensor reveals the feasibility of using one device to realize multifunctional detection. This work proposes a simple and significant method to achieve reversible tuning between the Schottky contact and Ohmic contact on one device by TENG, which exhibits great potential in developing multifunctional and high-sensitivity biosensors, rectifiers, and other functional electronic devices.

show abstract

On the Photo‐Carriers Dynamic Regulation by Piezo‐Phototronic Effect in Metal‐Oxide–Semiconductor Tunneling Junction

Wang

Peng

Huang

et al. 2023

Adv Materials Inter

View full text Add to dashboard Cite

eration, separation, recombination, and transportation of charge carriers at the interface or junction through the piezoelectric potential. [1] The novel optoelectronic devices with high performance can be realized though the piezo-phototronic effect. The piezo-phototronic effect utilize the piezo-charges and piezo-potential generated at the interface to tune the height of the barrier, and exponentially control the photogenerated carriers transport at metal-semiconductor, anisotype and isotype heterojunction photodiode. [2,3] Piezo-phototronic devices have attracted much research interest because they can directly convert mechanical signals into electrical signals. This unique energy conversion method has been used in solar cells, [4][5][6] light-emitting diodes, [7][8][9] touchscreen electronics, [10,11] light detection and imaging, [12,13] high electron mobility transistors, [14] and so on.In recent years, research on piezophototronic effect has made great progress. Generally speaking, the current research is focused on two directions. On the one hand, 1D and 2D materials with different piezoelectric coefficients are used in conventional device structures such as metal-semiconductor, [15][16][17][18][19] homogeneous p-n junction, and heterogeneous p-n junction. [20][21][22] On the other hand, different device structures are investigated to enhance the efficiency of piezoelectric polarization charges,

show abstract

Theory of piezotronics and piezo-phototronics

Abstract: Abstract

Cited by 72 publications

References 69 publications

Advances in Piezo‐Phototronic Effect Enhanced Photocatalysis and Photoelectrocatalysis

Advances in Piezo‐Phototronic Effect Enhanced Photocatalysis and Photoelectrocatalysis

Reversible Conversion between Schottky and Ohmic Contacts for Highly Sensitive, Multifunctional Biosensors

On the Photo‐Carriers Dynamic Regulation by Piezo‐Phototronic Effect in Metal‐Oxide–Semiconductor Tunneling Junction

Contact Info

Product

Resources

About