Trap-mode PbSe mid-infrared photodetector with decreased-temperature processing method

Zhao, Xue; Tang, Xin; Li, Taipeng; Chen, Menglu

doi:10.1016/j.infrared.2023.104788

Cited by 3 publications

(2 citation statements)

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“…(3) Photodetectors based on lead chalcogenide bulk materials need to undergo hightemperature sensitization at 300-600 • C in a specific atmosphere, such as an oxygenrich and iodine-rich atmosphere [81]. However, the existing sensitization process lacks repeatability, stability, and uniformity, thereby restricting their application [82,83]. Lead chalcogenide CQD photodetectors can operate at room temperature, reducing the manufacturing cost and difficulty.…”

Section: Pbs Cqd Photodetectorsmentioning

confidence: 99%

Lead Chalcogenide Colloidal Quantum Dots for Infrared Photodetectors

Zhao,

Ma,

Cai

et al. 2023

Materials

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Infrared detection technology plays an important role in remote sensing, imaging, monitoring, and other fields. So far, most infrared photodetectors are based on InGaAs and HgCdTe materials, which are limited by high fabrication costs, complex production processes, and poor compatibility with silicon-based readout integrated circuits. This hinders the wider application of infrared detection technology. Therefore, reducing the cost of high-performance photodetectors is a research focus. Colloidal quantum dot photodetectors have the advantages of solution processing, low cost, and good compatibility with silicon-based substrates. In this paper, we summarize the recent development of infrared photodetectors based on mainstream lead chalcogenide colloidal quantum dots.

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Section: Pbs Cqd Photodetectorsmentioning

confidence: 99%

Lead Chalcogenide Colloidal Quantum Dots for Infrared Photodetectors

Zhao,

Ma,

Cai

et al. 2023

Materials

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“…Semiconductor nanoparticles (NPs) are particularly appealing due to their unique structural, optical, and electrical characteristics compared to bulk materials. Among these materials, lead iodide (PbI 2 ) stands out as a noteworthy member of the layered semiconductor family, garnering significant attention from researchers due to its superior properties [10,11]. PbI 2 possesses a direct band gap ranging from 2.3 to 2.6 eV at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Promising porous spherical PbI₂/poly-2-aminobenzenethiol nanocomposite as a photocathode for hydrogen generation from Red Sea water

Rabia,

Elsayed,

Abdallah Alnuwaiser

2024

Phys. Scr.

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A highly efficient porous spherical nanocomposite photocathode, known as PbI2/poly-2-amino benzene thiol (PbI2/P2ABT), is created through a two-step reaction process involving the oxidation of 2-amino benzene thiol with iodine, followed by a double displacement reaction. The resulting nanocomposite displays outstanding morphology, comprising spherical particles with a diameter of 500 nm and featuring nanoscale porosity with pore sizes around 5 nm. Notably, the hydrogen production estimate reaches 9.6 µmole/h·10 cm2, a promising outcome attributed to the environmentally friendly and cost-effective use of natural Red Sea water. The quantification of hydrogen gas is accomplished by assessing the photogenerated carriers using the current density relationship. The calculated Jph value experiences a substantial increase to -0.122 mA.cm-2 compared to a minimal 0.07 mA.cm-2 in the absence of light. Furthermore, the optical assessment reveals exceptional Jph values under 340 nm, reaching 0.121 mA.cm-2, which extends to the visible spectrum with a value of 0.112 mA.cm-2. The remarkable features of this nanocomposite include its cost-effectiveness, ease of fabrication, and scalability for mass production. These qualities collectively enable the conversion of Red Sea water into hydrogen gas, offering a practical and efficient solution aligned with eco-friendly and economically viable practices. This nanocomposite shows significant potential for advancing clean energy technologies and contributing to sustainable hydrogen production from natural water sources.

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Effect of N2/I2 atmosphere annealing sensitization on PbSe-based photodetector for NIR photodetection

Chen,

Li,

Zhang

et al. 2024

Optical Materials

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Trap-mode PbSe mid-infrared photodetector with decreased-temperature processing method

Cited by 3 publications

References 39 publications

Lead Chalcogenide Colloidal Quantum Dots for Infrared Photodetectors

Lead Chalcogenide Colloidal Quantum Dots for Infrared Photodetectors

Promising porous spherical PbI₂/poly-2-aminobenzenethiol nanocomposite as a photocathode for hydrogen generation from Red Sea water

Effect of N2/I2 atmosphere annealing sensitization on PbSe-based photodetector for NIR photodetection

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Trap-mode PbSe mid-infrared photodetector with decreased-temperature processing method

Cited by 3 publications

References 39 publications

Lead Chalcogenide Colloidal Quantum Dots for Infrared Photodetectors

Lead Chalcogenide Colloidal Quantum Dots for Infrared Photodetectors

Promising porous spherical PbI2/poly-2-aminobenzenethiol nanocomposite as a photocathode for hydrogen generation from Red Sea water

Effect of N2/I2 atmosphere annealing sensitization on PbSe-based photodetector for NIR photodetection

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Promising porous spherical PbI₂/poly-2-aminobenzenethiol nanocomposite as a photocathode for hydrogen generation from Red Sea water