ZnO based homojunction p-i-n solar cell to self-power UV detector

Singh, Khomdram Jolson; Singh, Chabungbam Akendra; Singh, Thokchom Jayenta; Chettri, Dhanu; Sarkar, Subir Kumar

doi:10.1109/icicct.2017.7975208

Cited by 2 publications

(2 citation statements)

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“…The exploration of window-layer materials is rather limited even though they play a crucial role in the extraction and transportation of the charge carriers. It has already been demonstrated that ZnO is an excellent candidate as an electron-transport layer because it possesses relatively high mobility, high optical transparency (wide band gap), abundance, and ease of fabrication and processing. , The excellent photosensitive response of ZnO to ultraviolet (UV) radiation is also well-known and adds to its utility in solar cells . Several groups have explored various modifications to ZnO films and monitored the effect of these modifications in solar cells to achieve >8% PCE. ,,, Song and Cheng’s group, for instance, studied the impact of different ZnO thicknesses on optimization of the CQD solar-cell performance .…”

Section: Introductionmentioning

confidence: 99%

“…18,19 The excellent photosensitive response of ZnO to ultraviolet (UV) radiation is also well-known and adds to its utility in solar cells. 20 Several groups have explored various modifications to ZnO films and monitored the effect of these modifications in solar cells to achieve >8% PCE. 4,16,21,22 Song and Cheng's group, for instance, studied the impact of different ZnO thicknesses on optimization of the CQD solar-cell performance.…”

Section: ■ Introductionmentioning

confidence: 99%

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Impact of Background Oxygen Pressure on the Pulsed-Laser Deposition of ZnO Nanolayers and on Their Corresponding Performance as Electron Acceptors in PbS Quantum-Dot Solar Cells

Dong

Liu

Hara

et al. 2019

ACS Appl. Nano Mater.

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ZnO films are commonly employed as n-type semiconductors in heterojunctions with PbS colloidal quantum-dot (CQDs) films because of their outstanding optical transparency and electron acceptor properties, yet studies of the impact of ZnO film microstructure, composition, and defect qualities on the solar-cell performance are quite limited. Here we report on the fabrication of ZnO films via pulsed-laser deposition and use these films to investigate how different morphologies affect the PbS CQD solar-cell performance. By modification of the background gas O 2 pressures during the ZnO deposition process, the device performance approaching a 7.8% energy conversion efficiency is achieved with an O 2 pressure of 100 mTorr. Higher or lower O 2 pressures led to significantly lower device efficiency. We employ various materials and device characterizations to highlight the differences in the physical properties introduced by the fabrication oxygen pressure. In particular, we have found that the differences in the type and density of ZnO oxygen defects are the key factors behind the dispersion in solar-cell performances.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Impact of Background Oxygen Pressure on the Pulsed-Laser Deposition of ZnO Nanolayers and on Their Corresponding Performance as Electron Acceptors in PbS Quantum-Dot Solar Cells

Dong

Liu

Hara

et al. 2019

ACS Appl. Nano Mater.

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Ultraviolet photodetectors based on doped ZnO films

Chan

2019

J. Phys.: Conf. Ser.

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In this paper, we report the realization of ultraviolet (UV) photodetector based on doped ZnO films. The ZnO p-n junction was fabricated on indium tin oxide (ITO) coated glass, which consists of n-type and p-type layers based on Ga-doped (2 at.%) and N-doped (20 at.%) ZnO films, respectively. The current-voltage (IV) characteristics, photosensitivity, photoresponsitivity, and photocurrent gain were derived to determine the performance of the device. At 5 V reverse bias, the ZnO-based UV photodetector exhibits photosensitivity of 10.9, photoresponsivity of 2.1 × 10−2 AW−1, and photoconductive gain of 7.2 × 10−2.

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ZnO based homojunction p-i-n solar cell to self-power UV detector

Cited by 2 publications

References 8 publications

Impact of Background Oxygen Pressure on the Pulsed-Laser Deposition of ZnO Nanolayers and on Their Corresponding Performance as Electron Acceptors in PbS Quantum-Dot Solar Cells

Impact of Background Oxygen Pressure on the Pulsed-Laser Deposition of ZnO Nanolayers and on Their Corresponding Performance as Electron Acceptors in PbS Quantum-Dot Solar Cells

Ultraviolet photodetectors based on doped ZnO films

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