Erasable memory properties of spectral selectivity modulated by temperature and bias in an individual CdS nanobelt-based photodetector

2019 ◽  
Vol 4 (1) ◽  
pp. 138-147 ◽  
Author(s):  
Tao Tong ◽  
Shujuan Wang ◽  
Jie Zhao ◽  
Baochang Cheng ◽  
Yanhe Xiao ◽  
...  
Keyword(s):  
Spectral Response ◽  
High Response ◽  
Bandgap Energy ◽  
Spectral Selectivity ◽  
Response Range

Single CdS nanobelt-based photodetectors show an ultra-high response to light close to the bandgap energy at large bias, and moreover their spectral response range selectivity to above- and below-bandgap light can show an reversable memory by temperature-writing and bias-erasing.

Double dye cubic-sensitized solar cell based on Förster resonant energy transfer

RSC Advances ◽  
2015 ◽  
Vol 5 (13) ◽  
pp. 10026-10032 ◽  
Author(s):  
Wenxia Li ◽  
Jingbo Zhang ◽  
Yingyu Cao ◽  
Yuan Lin
Keyword(s):  
Energy Transfer ◽  
Spectral Response ◽  
Dye Sensitized Solar Cells ◽  
Eosin Y ◽  
Zno Thin Film ◽  
Resonant Energy ◽  
Dye Sensitized ◽  
Response Range ◽  
Resonant Energy Transfer ◽  
Sensitized Solar Cells

To extend the spectral response range of dye-sensitized solar cells through Förster resonant energy transfer, eosin Y and rhodamine B were chosen as an donor and a acceptor to cubic-sensitize nanocrystalline ZnO thin film.

Photomultiplication type organic photodetectors with tunable spectral response range

2019 ◽  
Vol 69 ◽  
pp. 354-360 ◽  
Author(s):  
Zijin Zhao ◽  
Jian Wang ◽  
Jianli Miao ◽  
Fujun Zhang
Keyword(s):  
Spectral Response ◽  
Response Range ◽  
Organic Photodetectors

scholarly journals Manganite Heterojunction Photodetector with Broad Spectral Response Range from 200 nm to 2 μm

Micromachines ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 129
Author(s):  
Ru Chen ◽  
Zhiqing Lu ◽  
Kun Zhao
Keyword(s):  
Size Effect ◽  
Transition Point ◽  
Spectral Response ◽  
Visible Range ◽  
Oxide Heterostructures ◽  
Junction Resistance ◽  
Quantum Size ◽  
Microelectronic Devices ◽  
Response Range ◽  
Infrared Photodetection

In this paper, we investigate the broad spectral photocurrent properties of the La0.67Ca0.33MnO3/Si (LCMO/Si) heterojunction from 200 nm to 2.0 μm, as the temperature increases from 95 to 300 K. We observed the junction’s uniform responsivity in the visible range and five absorption peaks at 940 nm, 1180 nm, 1380 nm, 1580 nm, and 1900 nm wavelengths. The temperature showed effective affection to the photocurrents at absorption peaks and the transition point occurred at 216 K, which was also displayed in the temperature dependence of junction resistance. On the basis of the results, we propose a possible model involving the quantum size effect at the junction interface as the mechanism. This understanding of the infrared photodetection properties of oxide heterostructures should open a route for devising future microelectronic devices.

scholarly journals Facile Synthesis of Indium Sulfide/Flexible Electrospun Carbon Nanofiber for Enhanced Photocatalytic Efficiency and Its Application

Scanning ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Liu Han ◽  
Haohao Dong ◽  
Dong Mao ◽  
Baolv Hua ◽  
Qinyu Li ◽  
...  
Keyword(s):  
Carbon Nanofiber ◽  
Diffuse Reflectance Spectroscopy ◽  
Spectral Response ◽  
Heterogeneous Systems ◽  
Indium Sulfide ◽  
One Pot ◽  
One Dimensional ◽  
Response Range ◽  
Uv Visible ◽  
The One

Heterojunction system has been proved as one of the best architectures for photocatalyst owing to extending specific surface area, expanding spectral response range, and increasing photoinduced charges generation, separation, and transmission, which can provide better light absorption range and higher reaction site. In this paper, Indium Sulfide/Flexible Electrospun Carbon Nanofiber (In2S3/CNF) heterogeneous systems were synthesized by a facile one-pot hydrothermal method. The results from characterizations of SEM, TEM, XRD, Raman, and UV-visible diffuse reflectance spectroscopy displayed that flower-like In2S3 was deposited on the hair-like CNF template, forming a one-dimensional nanofibrous network heterojunction photocatalyst. And the newly prepared In2S3/CNF photocatalysts exhibit greatly enhanced photocatalytic activity compared to pure In2S3. In addition, the formation mechanism of the one-dimensional heterojunction In2S3/CNF photocatalyst is discussed and a promising approach to degrade Rhodamine B (RB) in the photocatalytic process is processed.

Preparation and photocatalytic activity of pendant heteroaryl groups (pyrimidine and pyridine) grafted polyterthiophene/TiO2 composites

2020 ◽  
Vol 10 (11) ◽  
pp. 1877-1891
Author(s):  
Yingcheng Liu ◽  
Abdukeyum Abdurexit ◽  
Ruxangul Jamal ◽  
Wenli Zhang ◽  
Yinqiang Yan ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Structural Analysis ◽  
Uv Light ◽  
Spectral Response ◽  
Solar Irradiation ◽  
Molar Ratio ◽  
Response Range ◽  
Non Covalent Interactions ◽  
Simulated Solar Irradiation ◽  
Covalent Interactions

In this paper, new π-conjugated heterocyclic systems with pyrimidine- and pyridine-grafted polyterthiophene were combined with TiO2 to obtain composite materials (PDTPrT/TiO2 and PDTPrmT/TiO2). The photocatalytic properties of the composites were tested by using them to degrade MB using UV-light and simulated solar irradiation. The structural analysis revealed that the pyrimidine and pyridine groups in the polyterthiophenes interacted with TiO2 via non-covalent interactions. The combination of the substituted polyterthiophene and TiO2 restrained the recombination rate of photogenerated e-?h+ pairs and broadened the spectral response range of TiO2. The results indicated that PDTPrT/TiO2 and PDTPrmT/TiO2 with a TiO2-to-monomer molar ratio of 75 had the highest photodegradation rates under UV light (98.6% and 97.4%, respectively after 10 min) and simulated solar (95.4% and 92.7%, respectively after 300 min).

Synthesis of novel Zn0.5Mg0.5Fe2O4@TiO2 nanotube arrays with enhanced photoelectrocatalytic properties

RSC Advances ◽  
2015 ◽  
Vol 5 (63) ◽  
pp. 51308-51317 ◽  
Author(s):  
Jingqiang Pan ◽  
Xinyong Li ◽  
Qidong Zhao ◽  
Dongke Zhang
Keyword(s):  
Spectral Response ◽  
Charge Recombination ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays ◽  
Response Range

Zn0.5Mg0.5Fe2O4 nanoparticles contribute to widening of the spectral response range and reducing the charge recombination of TiO2 nanotube arrays.

scholarly journals Preparation and Characterization of Pt-Doped Bi2MoO6 Nanocomposites and Its High PDT Efficiency on HL60 Cells

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Mucang Xiao ◽  
Miaomiao Li ◽  
Yongkun Lun ◽  
Qilin Pan ◽  
Baoquan Ai ◽  
...  
Keyword(s):  
High Efficiency ◽  
Reduction Method ◽  
Spectral Response ◽  
Chemical Properties ◽  
Atomic Ratio ◽  
Hl60 Cells ◽  
Response Range ◽  
Vis Spectroscopy

In this study, Pt-doped Bi2MoO6 nanocomposites were prepared by solvothermal and in situ reduction method. We used XRD, UV-Vis spectroscopy, TEM, EDS, and XPS to characterize its chemical properties. Results showed that the Pt-doped Bi2MoO6 nanocomposites had advantages of small size, good dispersion, and wide spectral response range. Then, we tested its biological toxicity and PDT efficiency on HL60 cells. Both pure Bi2MoO6 and Pt-doped Bi2MoO6 nanocomposites showed great biocompatibility after coincubated with leukemia cells for 12 h in the dark. As to PDT efficiency, Pt-doped Bi2MoO6 had a better-inactivated effect than pure Bi2MoO6. Furthermore, the PDT efficiency went up when atomic ratios and concentration increased. While the atomic ratio was 5% and the concentration was 1000 μg/mL, it reached the highest value at 85.2%. At last, we briefly analyzed the photocatalysis mechanism, which demonstrated that it was a potential photosensitizer with high efficiency for treating leukemia.

scholarly journals Improvement of Solar PV Efficiency. Potential Materials for Organic Photovoltaic Cells

2013 ◽  
Vol 12 (1) ◽  
pp. 28-33
Author(s):  
Janis Latvels ◽  
Raitis Grzibovskis ◽  
Aivars Vembris ◽  
Dagnija Blumberga
Keyword(s):  
Absorption Spectra ◽  
Energy Gap ◽  
Spectral Response ◽  
Photovoltaic Cells ◽  
Threshold Energy ◽  
Organic Photovoltaic ◽  
Solar Pv ◽  
Optical Energy Gap ◽  
Response Range ◽  
Derivatives Of

Abstract Organic photovoltaic (OPV) cells are considered as a viable alternative to those energy sources currently in use. In this work three derivatives of original N,N’- dimetilaminobenziliden-1,3-indandione (DMABI) material are presented as potential materials for OPV. The photoconductivity threshold energy was evaluated from the perspective of spectral dependence of photoconductivity quantum efficiency, and the optical energy gap was defined to determine the optical absorption spectra. The absorption spectra of derivatives are blue shifted compared to original DMABI. Use of these derivatives in multilayer solar cells with original DMABI makes it possible to broaden the spectral response range of OPV.

Pressure Engineering for Extending Spectral Response Range and Enhancing Photoelectric Properties of Iodine

2021 ◽  
pp. 2101163
Author(s):  
Zonglun Li ◽  
Haiyan Li ◽  
Nana Liu ◽  
Mingyang Du ◽  
Xilian Jin ◽  
...  
Keyword(s):  
Spectral Response ◽  
Photoelectric Properties ◽  
Response Range

High performance small molecule photodetector with broad spectral response range from 200 to 900 nm

2011 ◽  
Vol 99 (2) ◽  
pp. 023305 ◽  
Author(s):  
Shuang-hong Wu ◽  
Wen-lian Li ◽  
Bei Chu ◽  
Zi-sheng Su ◽  
Feng Zhang ◽  
...  
Keyword(s):  
Small Molecule ◽  
High Performance ◽  
Spectral Response ◽  
Response Range
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