Crystal-Orientation-Related Dynamic Tuning of the Lasing Spectra of CdS Nanobelts by Piezoelectric Polarization

Ma, Wenda; Lu, Junfeng; Yang, Zheng; Peng, Dengfeng; Li, Fangtao; Peng, Yiyao; Chen, Qiushuo; Sun, Junlu; Xi, Jinying; Pan, Caofeng

doi:10.1021/acsnano.9b01735

Cited by 22 publications

(16 citation statements)

References 52 publications

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“…To solve the problem that both piezoelectric polarization and resonant cavity length can control the laser mode simultaneously under strain, Pan and co‐workers used wurtzite‐structured CdS nanobelts as Fabry–Pérot (F–P) laser resonator, and investigate laser mode shift in different CdS crystal orientations under stress. [ 93 ] Two morphologies of CdS nanobelts were prepared by VLS method. Among them, the growth direction of parallelogram nanobelts was along the [001] orientation (Figure 9c), whereas the growth direction of ladder nanobelts was non‐[001] orientation.…”

Section: Tactile Sensors Based On Piezophototronic Effectmentioning

confidence: 99%

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Piezophototronic Effect in Nanosensors

et al. 2021

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The piezophototronic effect is the coupling of piezoelectricity, semiconductor behavior and photon excitation in wurtzite materials, which can enhance the performance of optoelectronic nano‐devices by regulating a series of processes of carrier injection, transport, and recombination. In recent years, many research results have been reported on the improvement of nanophotoelectric nano‐device efficiency by piezophototronic effect, such as photovoltaic devices, light‐emitting devices, transistors, etc. Herein, the research results of piezophototronic effect in the field of nanosensors, including enhancing the performance of traditional nanosensors and new types of pressure/deformation/tactile sensors based on piezophototronic effect are comprehensively summarized. Finally, the future development of piezophototronic effect in the field of nanosensors is discussed.

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Section: Tactile Sensors Based On Piezophototronic Effectmentioning

confidence: 99%

Section: Tactile Sensors Based On Piezophototronic Effectmentioning

confidence: 99%

Piezophototronic Effect in Nanosensors

et al. 2021

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“…Piezotronics, regulating the carrier transport by piezo‐potential, 1–4 has received significant attentions and substantial expansion for intrinsic applications in piezoelectric, piezophototronics, and flexible devices due to the universality and pervasiveness of internal and external strain in the devices and non‐center symmetrical semiconductors 5–12 . Simultaneously, two‐dimensional (2D) materials were widely explored on optics, 13–24 electronics, 25–33 and magnetism 34–41 . since the first discovery of single atomic thickness graphene.…”

Section: Introductionmentioning

confidence: 99%

Piezotronics in two‐dimensional materials

Zhang

Zuo

Chen

et al. 2021

InfoMat

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The fascinating two‐dimensional (2D) materials are being potentially applied in various fields from science to engineering benefitting from the charming physical and chemical properties on optics, electronics, and magnetism, compared with the bulk crystal, while piezotronics is a universal and pervasive phenomenon in the materials with broking center symmetry, promoting the new field and notable achievements of piezotronics in 2D materials with higher accuracy and sensitivity. For example, 20 parts per billion of the detecting limitations in NO2 sensor, 500 μm of spatial strain resolution in flexible devices, and 0.363 eV output voltage in nanogenerators. In this review, three categories of 2D piezotronics materials are first introduced ranging from organic to inorganic data, among which six types of 2D inorganic materials are emphasized based on the geometrical arrangement of different atoms. Then, the microscopic mechanism of carrier transport and separation in 2D piezotronic materials is highlighted, accompanied with the presentation of four measured methods. Subsequently, the developed applications of 2D piezotronics are discussed comprehensively including different kinds of sensors, piezo‐catalysis, nanogenerators and information storage. Ultimately, we suggest the challenges and provide the ideas for qualitative–quantitative research of microscopic mechanism and large‐scale integrated applications of 2D piezotronics.

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“…However, the NBE emission variation‐based strain sensors possess many critical drawbacks such as a low color‐resolvability and low resolution. Recently, a novel method to obtain the value of applied strain using the evolution of lasing mode in ZnO microwires, CdS nanobelts or CsPbBr 3 microwires has been proposed . Moreover, compared with these materials, GaN possesses a superior stability, high melting point, and wide energy bandgap, leading to wide application spaces such as short‐wavelength, intense radiation, high temperature, and strong acidity or alkalinity situations .…”

Section: Introductionmentioning

confidence: 99%

Dynamically Modulated GaN Whispering Gallery Lasing Mode for Strain Sensor

Peng

et al. 2019

Adv Funct Materials

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The continuous development of strain sensors offers significant opportunities for improving human-machine interfaces and health monitoring. The dynamically modulated lasing mode is a novel approach to realize a flexible, noncontact, high color-resolvability, high-resolution, and ultrasensitive strain sensor. Here, a flexible strain sensor perceiving stress variations is reported via the dynamical regulation of a GaN whispering gallery lasing mode based on the piezoelectric effect. The refraction index of GaN shows a linear relationship with the applied external tensile strain, resulting in a redshift phenomenon of the lasing mode peak at room temperature due to the predominant function of the piezoelectric polarization in the GaN microwire. Compared with a strain sensor relying on the wavelength shift of a photoluminescence (PL) emission peak, the differences and advantages of a sensor based on the strain-induced lasing mode variation are also investigated and analyzed systematically. This strain sensor may serve as an essential step toward the color mapping of mechanical signals by optical methods, with potential applications in color-perceived touching sensing, noncontact stress measurement, laser modulation, and optical communication technologies.

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Crystal-Orientation-Related Dynamic Tuning of the Lasing Spectra of CdS Nanobelts by Piezoelectric Polarization

Cited by 22 publications

References 52 publications

Piezophototronic Effect in Nanosensors

Piezophototronic Effect in Nanosensors

Piezotronics in two‐dimensional materials

Dynamically Modulated GaN Whispering Gallery Lasing Mode for Strain Sensor

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