High performance self-powered UV photodetection by ZnO/Cu3N core-shell nanorod heterostructures via p-n junction formation

Sakalley, Shikha; Saravanan, Adhimoorthy; Cheng, Wei-Jen; Chen, Sheng-Chi; Sun, Hui; Huang, Bohr–Ran; Liao, Ming-Han

doi:10.1016/j.jallcom.2022.168157

Cited by 14 publications

(2 citation statements)

References 67 publications

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“…24 The additional strong peak observed at 437 cm −1 for ZnO-NFA/ BTO is assigned to ZnO-NFA. 42,43 X-ray photoelectron spectroscopy (XPS) using element C for calibration was performed for the chemical elements in ZnO-NFA/BTO (Figure S3). The Ba 3d, Ti 3d, Zn 2p, and O 1s peaks in the XPS full spectra of ZnO-NFA/BTO are shown (Figure S3a).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Pyro-Phototronic Effect-Enhanced Photocurrent of a Self-Powered Photodetector Based on ZnO Nanofiber Arrays/BaTiO₃ Films

Yu,

Wang,

Zheng

et al. 2023

ACS Appl. Mater. Interfaces

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Self-powered photodetectors (PD) based on ferroelectric materials have gained huge attention because of the spontaneous polarization and unique photovoltaic effect. However, the low photocurrent values and switch ratio of the ferroelectric materials limit their further practical applications in a wide temperature range. In this study, the self-powered ZnO nanofiber array/BaTiO3 (ZnO-NFA/BTO) PD was fabricated by high-ordered ZnO-NFA via electrospinning method deposited on a 300 nm BTO film synthesized using sol–gel method. The electrospinning can prepare ZnO-NFAs with a controllable diameter (100 nm) and orientation and is directly deposited on the quartz at a large scale, which simplifies the fabrication process. This device possesses a greater on/off ratio of 2357 at zero bias than that of BTO PD (3.33) and the ZnO-NFA PD (125) at 0.2 V. The highest responsivity and specific detectivity are 1.41 mA W– 1 and 1.48 × 109 Jones at 368 nm under 0 V bias, respectively, which is enhanced about three magnitudes than the pristine BTO PD (1.21 μA W– 1 and 1.02 × 109 Jones). The photocurrent of the ZnO-NFA/BTO PD strongly depends on the temperature. After the cooling system and prepolarization processing are both introduced, the largest light current (475 nA) and photovoltaic plateaus (585 nA) are enhanced by about 4417 and 4278% under 368 nm at a power intensity of 4.46 mW cm–2 at 0 °C, respectively. The enhancement of photocurrent is associated with a ferro-pyro-phototronic effect, evidenced by enhanced ferroelectric polarization. The ZnO-NFA/BTO PD can detect weak signals at low power intensity with a wide temperature range of 0–100 °C under 0 V bias. The self-powered ZnO-NFA/BTO PD provides a new and promising way to fabricate high-performance and low-cost photodetectors from inorganic perovskite materials.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Pyro-Phototronic Effect-Enhanced Photocurrent of a Self-Powered Photodetector Based on ZnO Nanofiber Arrays/BaTiO₃ Films

Yu,

Wang,

Zheng

et al. 2023

ACS Appl. Mater. Interfaces

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“…This progress is underpinned by the fundamental working principle of PV cells, based on the PN junction, which efficiently converts sunlight into electricity. It is a fact that the earlier versions of conventional solar cells had very low efficiencies [13], but with time the transformation of technology has made solar energy a highly promising solution employing III-V elements for forming the PN junctions in a variety of manners [14].…”

Section: Introductionmentioning

confidence: 99%

Unlocking the Sun's potential: solar cell design empowered through BSF+ layer using Silvaco TCAD

Syed,

Ijaz,

Ali

et al. 2024

Photonics for Solar Energy Systems X

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Solar cell technology plays a crucial role in the sustainable energy landscape, offering a promising avenue for renewable energy generation. In this study, we have presented a physical device simulation of a solar cell using Silvaco TCAD. The objective of this research is to investigate the impact of various parameters on the solar cell's efficiency and explore them for enhancing cell's performance. In general, a solar cell is a composite of several key components, including absorber layer, charge transport layers, contacts, and anti-reflection coating. This study encompasses the physical processes occurring within the solar cell, such as carrier generation, recombination, and transport. In this study, the parameters such as absorber layer thickness, doping concentration, and contact materials are taken as design parameters. The employment of various suitable contact materials resulted in reduced resistive losses and improved the charge extraction mechanism. Through rigorous simulation and analysis, we have identified the optimum parameter combination leading to an enhanced efficiency of the solar cell. After optimizing the absorber with a thickness of 200 microns was subjected to varying doping concentrations in the BSF + layer, ranging from 10 15 to 10 20 cm -3 . The photovoltaic characteristics of the proposed design are found to be Voc of 521.7 mV, Jsc of 43.94 mAcm -2 , FF of 77.98%, and an efficiency of 17.88%. Our research will advance solar cell technology, boosting conversion efficiency. Practical implications for designing and optimizing solar cell structures will benefit manufacturers and researchers. This study also lays the groundwork for future innovations in materials and device architectures, leading to more efficient, lightweight, and cost-effective solar cells, promoting sustainable energy solutions.

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Self‐Powered Broadband Photodetectors Based on Si/SnS₂ and Si/SnSe₂ p–n Heterostructures

Kumar,

Huang,

Saravanan

et al. 2024

Adv Elect Materials

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The escalating interest in 2D nanoflakes‐based group‐IVA metal chalcogenides is attributed to their noteworthy properties, such as high electron mobility, exceptional chemical stability, and applicability across diverse scientific disciplines such as sensing, energy storage applications, supercapacitors, and lithium‐ion batteries. This study introduces an innovative self‐powered photodetector based on 2D metal chalcogenide nanoflakes (SnS2 and SnSe2) formed into nanoflowers on a silicon substrate through the hydrothermal method. The amalgamation of the light‐induced pyroelectric effect into the SnS2 photodetector achieves impressive enhancement ratios of 353%, 425%, 351%, 662%, and 153% in photoresponsivity and detectivity compared to the photovoltaic effect at 365, 456, 532, 632, and 850 nm, respectively, at zero bias. The SnSe2 photodetector achieved responsivity values of 14, 82, 36, 4, and 28 mA W−1 at the corresponding wavelengths in self‐powered mode. The SnSe2 device exhibits superior photosensitivity of 30792%, 55692%, 28803%, 9678%, and 68587% at the corresponding wavelengths, under zero bias. In addition, the photocurrent response caused by the photovoltaic‐pyroelectric effect is thoroughly defined, and the impacts of light wavelength, power intensity, and bias voltage are studied. This study presents a cutting‐edge self‐powered broadband photodetector utilizing pyroelectric materials and opens possibilities for designing high‐performance, fast photodetectors based on the pyro‐phototronic effect.

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High performance self-powered UV photodetection by ZnO/Cu3N core-shell nanorod heterostructures via p-n junction formation

Cited by 14 publications

References 67 publications

Pyro-Phototronic Effect-Enhanced Photocurrent of a Self-Powered Photodetector Based on ZnO Nanofiber Arrays/BaTiO₃ Films

Pyro-Phototronic Effect-Enhanced Photocurrent of a Self-Powered Photodetector Based on ZnO Nanofiber Arrays/BaTiO₃ Films

Unlocking the Sun's potential: solar cell design empowered through BSF+ layer using Silvaco TCAD

Self‐Powered Broadband Photodetectors Based on Si/SnS₂ and Si/SnSe₂ p–n Heterostructures

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High performance self-powered UV photodetection by ZnO/Cu3N core-shell nanorod heterostructures via p-n junction formation

Cited by 14 publications

References 67 publications

Pyro-Phototronic Effect-Enhanced Photocurrent of a Self-Powered Photodetector Based on ZnO Nanofiber Arrays/BaTiO3 Films

Pyro-Phototronic Effect-Enhanced Photocurrent of a Self-Powered Photodetector Based on ZnO Nanofiber Arrays/BaTiO3 Films

Unlocking the Sun's potential: solar cell design empowered through BSF+ layer using Silvaco TCAD

Self‐Powered Broadband Photodetectors Based on Si/SnS2 and Si/SnSe2 p–n Heterostructures

Contact Info

Product

Resources

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Pyro-Phototronic Effect-Enhanced Photocurrent of a Self-Powered Photodetector Based on ZnO Nanofiber Arrays/BaTiO₃ Films

Pyro-Phototronic Effect-Enhanced Photocurrent of a Self-Powered Photodetector Based on ZnO Nanofiber Arrays/BaTiO₃ Films

Self‐Powered Broadband Photodetectors Based on Si/SnS₂ and Si/SnSe₂ p–n Heterostructures