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In this study, a highly sensitive and self-driven near-infrared (NIR) light photodetector based on PdSe /pyramid Si heterojunction arrays, which are fabricated through simple selenization of predeposited Pd nanofilm on black Si, is demonstrated. The as-fabricated hybrid device exhibits excellent photoresponse performance in terms of a large on/off ratio of 1.6 × 10 , a responsivity of 456 mA W , and a high specific detectivity of up to 9.97 × 10 Jones under 980 nm illumination at zero bias. Such a relatively high sensitivity can be ascribed to the light trapping effect of the pyramid microstructure, which is confirmed by numerical modeling based on finite-difference time domain. On the other hand, thanks to the broad optical absorption properties of PdSe , the as-fabricated device also exhibits obvious sensitivity to other NIR illuminations with wavelengths of 1300, 1550, and 1650 nm, which is beyond the photoresponse range of Si-based devices. It is also found that the PdSe /pyramid Si heterojunction device can also function as an NIR light sensor, which can readily record both "tree" and "house" images produced by 980 and 1300 nm illumination, respectively.
This article was published in the following journal.
Name: Small (Weinheim an der Bergstrasse, Germany)
With the goal of developing a low-cost scintillator-based photon counting detector (PCD) with high dose efficiency suitable for CT, the light transport characteristics in LYSO:Ce detectors containing ...
We have constructed a new approach to realize the light extraction enhancement in organic light-emitting diodes (OLEDs) by using FeO@Au nanoparticles (FOA NPs). The current efficiency of 97.8 cd/A at...
Here we report one-pot synthesis of tetraphenylethene-based tetracationic dicyclophane (1) and its self-assembly behaviors with aggregation-induced emission (AIE) and light-harvesting function. Confir...
Ultrafast electro-optical conversion at nanoscale is of fundamental interest for information transfer and optical interconnects. Light emission from a quantum tunnel junction provides an opportunity o...
The light-driven hybrid P450 enzyme approach utilizing the photochemical properties of a covalently attached Ru(II)-diimine photosensitizer was extended to the archaeal Sulfolobus acidocaldarius CYP11...
Visible-light-filtering IOLs are implanted increasingly often in cataract surgery. Several studies examined the effect of light-filters on contrast and colour vision. However, the study ou...
One of the most frequently investigated hypothesis of the pathophysiology underlying Seasonal Affective Disorder(SAD) or so called winter depression is a disturbance of circadian rhythms. ...
This study assesses differences in biological and behavioral domains that relate to individual adaptation and resiliency to an isolated, confined and controlled environment, and evaluates ...
This is a pilot trial testing the potential opioid-sparing analgesic effect of a novel non-pharmacological treatment using visualized light spectrums. Preclinical findings have shown such ...
A total of 29 volunteer patients will be assigned in this study. Each patient should have one resin composite restoration. The restoration will be evaluated by two diagnostic methods (D), ...
Still images produced from radiation-sensitive materials (sensitive to light, electron beams, or nuclear radiation), generally by means of the chemical action of light on a sensitive film, paper, glass, or metal. Photographs may be positive or negative, opaque or transparent.
SNARE binding proteins that facilitate the ATP hydrolysis-driven dissociation of the SNARE complex. They are required for the binding of N-ETHYLMALEIMIDE-SENSITIVE PROTEIN (NSF) to the SNARE complex which also stimulates the ATPASE activity of NSF. They are unrelated structurally to SNAP-25 PROTEIN.
Blue-light receptors that regulate a range of physiological responses in PLANTS. Examples include: PHOTOTROPISM, light-induced stomatal opening, and CHLOROPLAST movements in response to changes in light intensity.
A highly-sensitive (in the picomolar range, which is 10,000-fold more sensitive than conventional electrophoresis) and efficient technique that allows separation of PROTEINS; NUCLEIC ACIDS; and CARBOHYDRATES. (Segen, Dictionary of Modern Medicine, 1992)
Light driven chloride ion pumps that are ubiquitously found in halophilic archaea (HALOBACTERIALES).