Photovoltaic-pyroelectric effect coupled broadband photodetector in self-powered ZnO/ZnTe core/shell nanorod arrays

You, Daotong; Xu, Chunxiang; Zhang, Wei; Zhao, Jie; Qin, Feifei; Shi, Zengliang

doi:10.1016/j.nanoen.2019.05.050

Cited by 117 publications

(59 citation statements)

References 36 publications

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“…Along with the photogenerated charge carriers induced by photoelectricity, there are also extra pyroelectric polarization charges under illumination in some materials with inherent polarization, like ferroelectrics materials BiFeO 3 , [ 13 ] BaTiO 3 , [ 14,15 ] Pb(Zr,Ti)O 3 , [ 16 ] and pyroelectric material ZnO, [ 17–20 ] etc. Furthermore, the generated polarization charges can effectively modulate the behavior of photoinduced electrons, such as separation, transition, and recombination within heterojunctions.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the generated polarization charges can effectively modulate the behavior of photoinduced electrons, such as separation, transition, and recombination within heterojunctions. [ 21–27 ] For instance, by exploiting pyroelectric effect in ZnO/ZnTe, [ 18 ] ZnO/Si, [ 19 ] and ZnO/SnS [ 20 ] heterojunctions, the UV light‐induced pyroelectric potentials advantageously modulate the optoelectronic processes, and their detecting performances in terms of responsivity and response speed are strikingly enhanced at room temperature. Besides, the generation of pyroelectricity is strongly dependent on the temperature change rate.…”

Section: Introductionmentioning

confidence: 99%

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Structural Design and Pyroelectric Property of SnS/CdS Heterojunctions Contrived for Low‐Temperature Visible Photodetectors

Chang

Wang

et al. 2020

Adv Funct Materials

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The traditional photodetectors based on photoelectric effect exhibit inferior response or even out of operation with the decrease of temperature. However, cryogenic visible light detection is increasingly demanded in deep space and polar exploration. Herein, a self‐powered visible photodetector coupling pyroelectricity and photoelectricity to optimize the cryogenic detecting performance is designed in which hydrothermally grown CdS nanorod array is covered by SnS nanoflakes. The choice of SnS allows the detector with strong visible light absorption and great photoelectric conversion efficiency, while the CdS nanorod structure with pyroelectricity can effectively modulate the behavior of photogenerated carriers at low temperatures. It is found that the response characteristics of the photodetector are dominated by the combination of pyroelectric and photoelectric effects, which becomes more significant with the reduced temperature. Specifically, at 130 K temperature, the photoresponse current under 650 nm light is improved by 7.5 times as that at room temperature, while the ratio of pyroelectric current to photocurrent can be increased to 400%. Meanwhile, the responsivity and detectivity are as high as 10.4 mA W−1 and 3.56 × 1011 Jones, respectively. This work provides a promising approach to develop high‐performance self‐powered visible photodetectors with low‐temperature operating capability.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structural Design and Pyroelectric Property of SnS/CdS Heterojunctions Contrived for Low‐Temperature Visible Photodetectors

Chang

Wang

et al. 2020

Adv Funct Materials

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“…The p–n heterojunction has a sufficient E b to move the photogenerated charge‐carriers across the junction. This is often observed at the interface of ZnO‐based [ 58–62 ] heterojunctions and transitional metal dichalcogenides heterojunctions. [ 63,64 ] When light shines on the PDs with a photon energy above the bandgap ( E g ) of the photosensitizers, the electron–hole pairs are generated in the n‐type semiconductor at the interface (Figure 2b) and then separated, easily, by the E b .…”

Section: Fundamentals Of Heterojunction Architectures For Self‐powered Photodetectorsmentioning

confidence: 99%

Section: Structure Of Self‐powered Photodetectors/heterojunctionsmentioning

confidence: 99%

Recent Progress of Methods to Enhance Photovoltaic Effect for Self‐Powered Heterojunction Photodetectors and Their Applications in Inorganic Low‐Dimensional Structures

et al. 2021

Adv Funct Materials

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An important class of photoelectronic devices, self‐powered photodetectors, has attracted worldwide attention because of its crucial role in both basic scientific research and commercial/public applications. Thanks to a special synergistic effect, excellent photoelectric properties, and outstanding mechanical stability, the study of heterojunction devices can provide valuable insights and new possibilities for the future of self‐powered photodetectors. This paper reviews the recent years of fundamental research of photovoltaic efficiency based on the ferroelectric‐enhanced photovoltaic effect, the pyro‐phototronic effect, and the piezo‐phototronic effect. It also highlights important topics related to heterojunctions and materials that are suitable for self‐powered photodetectors. The article concludes with an outlook of the future development in this important and rapidly advancing field.

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“…As an aggregative indicator to evaluate the performance of a photodetector, the normalized detectivity (D*) can be expressed by Eq. 4 [12]:…”

Section: Annealing Temperature Effect On Device Performancementioning

confidence: 99%

Self-Assembled Al Nanostructure/ZnO Quantum Dot Heterostructures for High Responsivity and Fast UV Photodetector

Liu

Zhang

et al. 2020

Nano-Micro Lett.

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Photovoltaic-pyroelectric effect coupled broadband photodetector in self-powered ZnO/ZnTe core/shell nanorod arrays

Cited by 117 publications

References 36 publications

Structural Design and Pyroelectric Property of SnS/CdS Heterojunctions Contrived for Low‐Temperature Visible Photodetectors

Structural Design and Pyroelectric Property of SnS/CdS Heterojunctions Contrived for Low‐Temperature Visible Photodetectors

Recent Progress of Methods to Enhance Photovoltaic Effect for Self‐Powered Heterojunction Photodetectors and Their Applications in Inorganic Low‐Dimensional Structures

Self-Assembled Al Nanostructure/ZnO Quantum Dot Heterostructures for High Responsivity and Fast UV Photodetector

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