An amphidynamic inorganic–organic hybrid crystal of bromoplumbate with 1,5-bis(1-methylimidazolium)pentane exhibiting multi-functionality of a dielectric anomaly and temperature-dependent dual band emissions

2015 ◽  
Vol 44 (40) ◽  
pp. 17850-17858 ◽  
Author(s):  
Yuan-Bo Tong ◽  
Li-Te Ren ◽  
Hai-Bao Duan ◽  
Jian-Lan Liu ◽  
Xiao-Ming Ren
Keyword(s):  
Dielectric Anomaly ◽  
Dual Band ◽  
Temperature Dependent ◽  
Organic Hybrid

A hybrid crystal designed by the ‘multifunctional integrating strategy’, shows the bi-functionality of a dielectric anomaly and temperature-dependent dual band emissions.

Investigation of thermochromic photoluminescent, dielectric and crystal structural properties for an inorganic–organic hybrid solid of [1-hexyl-3-methylimidazolium][PbBr3]

2016 ◽  
Vol 40 (10) ◽  
pp. 8664-8672 ◽  
Author(s):  
Kun-Ming Wan ◽  
Yuan-Bo Tong ◽  
Li-Li Li-Li ◽  
Yang Zou ◽  
Hai-Bao Duan ◽  
...  
Keyword(s):  
Structural Properties ◽  
Dielectric Anomaly ◽  
Organic Hybrid ◽  
Crystal Structural

An imidazolium-based bromoplumbate hybrid solid shows fascinating luminescence thermochromism, appealing dielectric anomaly and relaxation.

Multi-color Photoresponse Based on Interband and Intersubband Transitions in InAs and InGaAs Quantum Dot Photodetectors

2007 ◽  
Vol 1055 ◽  
Author(s):  
Brandon Scott Passmore ◽  
Jiang Wu ◽  
Eric A. Decuir ◽  
Omar Manasreh ◽  
Peter M. Lytvyn ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Peak Position ◽  
Dual Band ◽  
Intersubband Transitions ◽  
Temperature Dependent ◽  
Mid Infrared ◽  
Poisson Equations ◽  
Infrared Spectral ◽  
Consistent Solution

ABSTRACTThe interband and intersubband transitions in self-assembled InAs and In0.3Ga0.7As quantum dots grown by molecular beam epitaxy have been investigated for their use in visible, near-, and mid-infrared detection applications. Devices based on InAs quantum dots embedded in an InxGa1−xAs (0 to 0.3) graded well and In0.3Ga0.7As quantum dots were fabricated in order to measure the temperature dependent (77 – 300 K) photoresponse. The dark current was measured in the temperature range of 77 to 300 K for the devices. Room temperature photoresponse ranging between 0.6 to 1.3 μm was observed for the InAs and In0.3Ga0.7As quantum dot photodetectors. Furthermore, a dual band photoresponse in the visible, near-, and mid-infrared spectral regions for both devices was observed at 77 K. Using a self-consistent solution of Schrödinger-Poisson equations, the peak position energies of the interband and intersubband transitions in the two multi-color quantum dot infrared photodetector structures was calculated.

scholarly journals Doping induced dielectric anomaly below the Curie temperature in molecular ferroelectric diisopropylammonium bromide

2018 ◽  
Vol 5 (11) ◽  
pp. 181397 ◽  
Author(s):  
Kaige Gao ◽  
Binbin Zhang ◽  
Yunqing Cao ◽  
Xiaobing Chen
Keyword(s):  
Point Defects ◽  
Domain Walls ◽  
Ferroelectric Domain ◽  
Dielectric Anomaly ◽  
X Ray Diffraction ◽  
Temperature Dependent ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Potential Applications ◽  
Structure Phase Transition

A dielectric anomaly induced by doping has been observed at about 340 K in chlorine-doped diisopropylammonium bromide. The dielectric anomaly has a switchable behaviour, which indicates potential applications on switches and sensors. Temperature-dependent Raman spectrum, X-ray diffraction and differential scanning calorimetry do not show any anomaly around the dielectric anomaly temperature, which prove that the dielectric anomaly does not come from structure phase transition and has no specific heat variety. It is assumed that this dielectric anomaly can be attributed to the freezing of ferroelectric domain walls induced by the pinning of point defects.

Luminescent Cu4I4-cubane clusters based on N-methyl-5,10-dihydrophenarsazines

2021 ◽  
Vol 50 (38) ◽  
pp. 13421-13429
Author(s):  
Milyausha F. Galimova ◽  
Ekaterina M. Zueva ◽  
Alexey B. Dobrynin ◽  
Ilya E. Kolesnikov ◽  
Rustem R. Musin ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Dual Band ◽  
Temperature Dependent ◽  
Band Emission ◽  
Cubane Clusters

Luminescent As-supported Cu4I4 cubane tetramers with a dual band emission, showing temperature-dependent intensities, were synthesized and studied in detail by DFT calculations.

Diffuse Dielectric Anomaly in MnO2-doped Pb0.9La0.1TiO3 Ceramic in the Temperature Range of 400–700 °C

2002 ◽  
Vol 17 (1) ◽  
pp. 127-132 ◽  
Author(s):  
Byung Sung Kang ◽  
Si Kyung Choi
Keyword(s):  
Dielectric Relaxation ◽  
Dielectric Anomaly ◽  
Temperature Dependent ◽  
Relaxation Strength ◽  
Temperature Range ◽  
Dependent Behavior ◽  
Dielectric Relaxation Behavior ◽  
Debye Equation ◽  
Decay Form ◽  
Temperature Dependent Behavior

The diffuse dielectric anomaly observed in the temperature range of 400–700 °C was investigated in MnO2-doped Pb0.9La0.1TiO3 ceramic. The frequency and the temperature dependence of the dielectric relaxation behavior in the diffuse dielectric anomaly were analyzed with the modified Debye equation. The dielectric relaxation strength was considered an important fitting variable in the modified Debye equation. The temperature-dependent behavior of the diffuse dielectric anomaly was successfully described by introduction of the exponential decay form for the relaxation strength inthe modified Debye equation.

Temperature dependent photoresponse from colloidal PbS quantum dot sensitized inorganic/organic hybrid photodiodes

2011 ◽  
Vol 98 (5) ◽  
pp. 053304 ◽  
Author(s):  
S. Pichler ◽  
T. Rauch ◽  
R. Seyrkammer ◽  
M. Böberl ◽  
S. F. Tedde ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Temperature Dependent ◽  
Organic Hybrid ◽  
Pbs Quantum Dot

Temperature-dependent electronic properties of inorganic-organic hybrid halide perovskite (CH3NH3PbBr3) single crystal

2017 ◽  
Vol 111 (23) ◽  
pp. 233302 ◽  
Author(s):  
Xiaolei Cui ◽  
Sijian Yuan ◽  
Huotian Zhang ◽  
Xin Zhang ◽  
Pengfei Wang ◽  
...  
Keyword(s):  
Single Crystal ◽  
Electronic Properties ◽  
Temperature Dependent ◽  
Organic Hybrid ◽  
Halide Perovskite

(111) Monocrystalline Nickel Films

1972 ◽  
Vol 30 ◽  
pp. 512-513
Author(s):  
T.E. Pratt ◽  
R.W. Vook
Keyword(s):  
Film Thickness ◽  
Deposition Rate ◽  
Room Temperature ◽  
Narrow Range ◽  
High Vacuum ◽  
Residual Pressure ◽  
Temperature Dependent ◽  
Deposition Parameters ◽  
Transmission Electron ◽  
Substrate Temperatures

(111) oriented thin monocrystalline Ni films have been prepared by vacuum evaporation and examined by transmission electron microscopy and electron diffraction. In high vacuum, at room temperature, a layer of NaCl was first evaporated onto a freshly air-cleaved muscovite substrate clamped to a copper block with attached heater and thermocouple. Then, at various substrate temperatures, with other parameters held within a narrow range, Ni was evaporated from a tungsten filament. It had been shown previously that similar procedures would yield monocrystalline films of CU, Ag, and Au.For the films examined with respect to temperature dependent effects, typical deposition parameters were: Ni film thickness, 500-800 A; Ni deposition rate, 10 A/sec.; residual pressure, 10-6 torr; NaCl film thickness, 250 A; and NaCl deposition rate, 10 A/sec. Some additional evaporations involved higher deposition rates and lower film thicknesses.Monocrystalline films were obtained with substrate temperatures above 500° C. Below 450° C, the films were polycrystalline with a strong (111) preferred orientation.

Sign in / Sign up

Export Citation Format

Share Document