Low‐dimensional nanomaterial/Si heterostructure‐based photodetectors

Tian, Wei; Sun, Haoxuan; Chen, Liang; Wangyang, Peihua; Chen, Xinrui; Xiong, Jie; Li, Liang

doi:10.1002/inf2.12014

Cited by 101 publications

(55 citation statements)

References 138 publications

(301 reference statements)

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“…Visible photodetectors composed of semiconductors as Si, GaAs, MoS 2 , etc., are widely used in the fields of photometric measurement and image recognition. [ 1–6 ] They work based on the photoelectric effect by virtue of strong light absorption capability and high photoelectric conversion efficiency of these semiconductors. [ 7,8 ] However, in cryogenic detection environment including deep space and polar exploration, the traditional visible photodetectors based on photoelectric effect exhibit inferior response or even out of operation.…”

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 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%

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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“…A perovskite light absorber with an ideal bandgap and crystallization quality is the first hurdle of an artificial photon energy harvesting system 24. For perovskite materials with a crystal structure of ABX 3 , the composition engineering of A‐site and X‐site elements is an effective way to tune the bandgap 25–29. MAPbBr x I 3− x is a widely studied perovskite family with a tuneable bandgap 25–27,30,31.…”

Section: Resultsmentioning

confidence: 99%

Realizing Stable Artificial Photon Energy Harvesting Based on Perovskite Solar Cells for Diverse Applications

Sun

Deng

Jiang

et al. 2020

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As the fastest developing photovoltaic device, perovskite solar cells have achieved an extraordinary power conversion efficiency (PCE) of 25.3% under AM 1.5 illumination. However, few studies have been devoted to perovskite solar cells harvesting artificial light, owing to the great challenge in the simultaneous manipulation of bandgap‐adjustable perovskite materials, corresponding matched energy band structure of carrier transport materials, and interfacial defects. Herein, through systematic morphology, composition, and energy band engineering, high‐quality Cs0.05MA0.95PbBrxI3−x perovskite as the light absorber and NbyTi1−yO2 (Nb:TiO2) as the electron transport material with an ideal energy band alignment are obtained simultaneously. The theoretical‐limit‐approaching record PCEs of 36.3% (average: 34.0 ± 1.2%) under light‐emitting diode (LED, warm white) and 33.2% under fluorescent lamp (cold white) are achieved simultaneously, as well as a PCE of 19.5% (average: 18.9 ± 0.3%) under solar illumination. An integrated energy conversion and storage system based on an artificial light response solar cell and sodium‐ion battery is established for diverse practical applications, including a portable calculator, quartz clock, and even environmental monitoring equipment. Over a week of stable operation shows its great practical potential and provides a new avenue to promote the commercialization of perovskite photovoltaic devices via integration with ingenious electronic devices.

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“…Furthermore, the self‐assembled PS MCCs also can be used to fabricate pyramid arrays (Figure c) Excellent superhydrophobic performance renders it obvious advantages for some bionic applications . Especially, based on the mask effect of the self‐assembled PS particles, large‐area nanorod arrays with different diameters and aspect ratios can be prepared by the MaCE approach for high‐performance PDs, SERS and light‐emitting devices (Figure d,e) . Furthermore, the top‐side nanopencil arrays with better light‐trapping property can also be fabricated (Figure f), which has huge potential applications in antireflection devices .…”

Section: Resultsmentioning

confidence: 99%

Interfacial Capillary‐Force‐Driven Self‐Assembly of Monolayer Colloidal Crystals for Supersensitive Plasmonic Sensors

Wang

Chen

et al. 2020

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Colloidal lithography technology based on monolayer colloidal crystals (MCCs) is considered as an outstanding candidate for fabricating large‐area patterned functional nanostructures and devices. Although many efforts have been devoted to achieve various novel applicatons, the quality of MCCs, a key factor for the controllability and reproducibility of the patterned nanostructures, is often overlooked. In this work, an interfacial capillary‐force‐driven self‐assembly strategy (ICFDS) is designed to realize a high‐quality and highly‐ordered hexagonal monolayer MCCs array by resorting the capillary effect of the interfacial water film at substrate surface as well as controlling the zeta potential of the polystyrene particles. Compared with the conventional self‐assembly method, this approach can realize the reself‐assembly process on the substrate surface with few colloidal aggregates, vacancy, and crystal boundary defects. Furthermore, various typical large‐scale nanostructure arrays are achieved by combining reactive ion etching, metal‐assisted chemical etching, and so forth. Specifically, benefiting from the as‐fabricated high‐quality 2D hexagonal colloidal crystals, the surface plasmon resonance (SPR) sensors achieve an excellent refractive index sensitivity value of 3497 nm RIU−1, which is competent for detecting bovine serum albumin with an ultralow concentration of 10−8 m. This work opens a window to prepare high‐quality MCCs for more potential applications.

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Low‐dimensional nanomaterial/Si heterostructure‐based photodetectors

Cited by 101 publications

References 138 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

Realizing Stable Artificial Photon Energy Harvesting Based on Perovskite Solar Cells for Diverse Applications

Interfacial Capillary‐Force‐Driven Self‐Assembly of Monolayer Colloidal Crystals for Supersensitive Plasmonic Sensors

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