Perovskites beyond photovoltaics: field emission from morphology-tailored nanostructured methylammonium lead triiodide

2017 ◽  
Vol 19 (39) ◽  
pp. 26708-26717 ◽  
Author(s):  
Nripen Besra ◽  
Shreyasi Pal ◽  
Bikram Kumar Das ◽  
Kalyan Kumar Chattopadhyay
Keyword(s):  
Field Emission ◽  
Chemical Method ◽  
Room Temperature ◽  
Wet Chemical Method ◽  
Synthesis Parameters ◽  
Simple Variation ◽  
Wet Chemical

Herein, methylammonium lead triiodide (CH3NH3PbI3) nanorods and nanocrystals were prepared by a facile room-temperature wet chemical method via simple variation of the synthesis parameters and their field emission performances were investigated.

Fabrication and characterization of n-ZnO nanorods/p-Si (100) heterojunction

2015 ◽  
Vol 24 (04) ◽  
pp. 1550050 ◽  
Author(s):  
Kieu Loan Phan Thi ◽  
Lam Thanh Nguyen ◽  
Anh Tuan Dao ◽  
Nguyen Huu Ke ◽  
Vu Tuan Hung Le
Keyword(s):  
Chemical Method ◽  
Room Temperature ◽  
Zno Nanorods ◽  
Average Height ◽  
X Ray Diffraction ◽  
Wet Chemical Method ◽  
X Ray ◽  
Wet Chemical ◽  
Fabrication And Characterization

In this paper, ZnO nanorods were grown by wet chemical method on p-Si (100) substrate to form n-ZnO nanorods/p-Si (100) heterojunction. The optical, electrical, structural properties of n-ZnO nanorods/p-Si(100) heterojunction were analyzed by the photoluminescence (PL) spectroscopy, [Formula: see text]–[Formula: see text] measurement, X-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. The room temperature PL spectra reveal the good optical property of the heterojunction with strong UV peak at 385[Formula: see text]nm. The ZnO nanorods were vertically well-aligned on p-Si (100) and had an average height of about 1.6[Formula: see text][Formula: see text]m. The n-ZnO nanorods/p-Si (100) heterojunction also exhibits diode-like-rectifying-behavior.

Synthesis and Evaluation of Hollow-Tubular ZnO by Wet Chemical Method

2007 ◽  
Vol 124-126 ◽  
pp. 571-574
Author(s):  
Hideaki Murase ◽  
Shoichiro Shio ◽  
Atsushi Nakahira
Keyword(s):  
Chemical Process ◽  
Aging Process ◽  
Chemical Method ◽  
Room Temperature ◽  
Single Phase ◽  
Chemical Processing ◽  
Wet Chemical Method ◽  
High Transparency ◽  
Wet Processing ◽  
Wet Chemical

In this study, morphology control of ZnO was performed by a wet chemical processing without templates at room temperature. In special, the effect of aging time and pH of this wet processing on ZnO morphologies was in detail investigated. As a result, products composed of a single phase of ZnO with a unique morphology like a hollow tube were obtained. Then, it was found that an aging process played an important role on controlling morphology of ZnO during this wet chemical process. Furthermore, it was found that this hollow-tubular ZnO had a high transparency.

Methanolysis of ammonia borane by shape-controlled mesoporous copper nanostructures for hydrogen generation

2015 ◽  
Vol 44 (3) ◽  
pp. 1070-1076 ◽  
Author(s):  
Qilu Yao ◽  
Ming Huang ◽  
Zhang-Hui Lu ◽  
Yuwen Yang ◽  
Yuxin Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Chemical Method ◽  
Room Temperature ◽  
Hydrogen Generation ◽  
Ammonia Borane ◽  
Wet Chemical Method ◽  
Wet Chemical ◽  
Shape Controlled ◽  
Cu Nanostructures

A facile and scaleable wet-chemical method has been successfully applied to the synthesis of diverse mesoporous Cu nanostructures, which exhibited excellent catalytic activity for hydrogen generation from the methanolysis of AB at room temperature.

Facile synthesis of Fe-baicalein nanoparticles for photothermal/chemodynamic therapy with accelerated Fe(III)/Fe(II) conversion

2021 ◽  
Author(s):  
Zhendong Liu ◽  
Chunling Hu ◽  
Sainan Liu ◽  
Lihan Cai ◽  
Ying Zhou ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Conversion Efficiency ◽  
Chemical Method ◽  
Room Temperature ◽  
Antitumor Efficacy ◽  
Wet Chemical Method ◽  
Facile Synthesis ◽  
Photothermal Conversion ◽  
Wet Chemical

Fe(II)-baicalein-polyethylene glycol (Fe-BaP) nanoparticles were synthesized by a room temperature wet chemical method via coordination between Fe(II) and baicalein. Fe-BaP possessed high photothermal conversion efficiency (η=45.6%) and excellent antitumor efficacy...

scholarly journals Synthesis of Ni-doped ZnO nanostructures by low-temperature wet chemical method and their enhanced field emission properties

RSC Advances ◽  
2016 ◽  
Vol 6 (106) ◽  
pp. 104318-104324 ◽  
Author(s):  
Amit Kumar Rana ◽  
Prashant Bankar ◽  
Yogendra Kumar ◽  
Mahendra A. More ◽  
Dattatray J. Late ◽  
...  
Keyword(s):  
Low Temperature ◽  
Field Emission ◽  
Chemical Process ◽  
Chemical Method ◽  
Zno Nanostructures ◽  
Wet Chemical Method ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Wet Chemical ◽  
Doped Zno

In this study, we report an enhancement in the field emission (FE) properties of ZnO nanostructures obtained by doping with Ni at a base pressure of ∼1 × 10−8 mbar, which were grown by a simple wet chemical process.

Cerium Doped Bismuth Based High Tc Superconductor: Synthesis and Study of Superconducting Properties

2012 ◽  
Vol 510-511 ◽  
pp. 75-79
Author(s):  
M. Mubeen ◽  
M. Anis-ur-Rehman
Keyword(s):  
Chemical Method ◽  
Room Temperature ◽  
Dc Resistivity ◽  
Ceramic Superconductor ◽  
Superconducting Properties ◽  
X Ray Diffraction ◽  
Wet Chemical Method ◽  
X Ray ◽  
Resistivity Measurements ◽  
Wet Chemical

High-Tcsuperconductivity has been an emerging field for researchers since its discovery. Bismith based superconductors commonly called BSCCO have great importance among the superconducting family. It is divided into three phases among them 2223 phase is highly studied in order to investigate its superconducting properties by substitution of different elements. We have studied the substitution of cerium (Ce) on calcium site of bismuth based Bi (Pb)Sr (Ba)-2223 high-Tcsuperconductor. The nominal compositions of Bi1.6Pb0.4Sr1.6Ba0.4(Ca1-xCex)2Cu3Oxceramic superconductor were prepared by wet chemical method. Stoichiometric amounts of Bi2O3, PbO, Sr (NO3)2, BaCO3, CaCO3, CuO and CeO2were used as starting materials. Structural analysis was done by X-ray diffraction (XRD) at room temperature and different parameters were calculated. DC resistivity measurements for the transition temperature of synthesized superconducting samples were taken by the standard four-probe method, apparatus for which was developed in our laboratory. It is observed that with the substitution of cerium on calcium site the single high-Tc2223 phase is obtained.

Synthesis and Thermal Conductivity of ZnO Nanofluids

2013 ◽  
Vol 734-737 ◽  
pp. 2415-2419
Author(s):  
Wei Jiang ◽  
Jing Wen Su ◽  
Can Ying Zhang ◽  
Da Xiong Wu ◽  
Hai Tao Zhu
Keyword(s):  
Thermal Conductivity ◽  
Zno Nanoparticles ◽  
Chemical Method ◽  
Particle Loading ◽  
Wet Chemical Method ◽  
Synthesis Parameters ◽  
Wet Chemical ◽  
Zno Nanofluids ◽  
Water Ratio ◽  
Thermal Conductivities

In this article, a wet chemical method was developed to prepare stable ZnO nanofluids. The influences of synthesis parameters, such as EG/water ratio, timing and quantity of NaOH addition, were studied. The thermal conductivity of the ZnO nanofluids was investigated. The results showed that synthesis parameters had significant impacts on the dispersibility and size of ZnO nanoparticles. The thermal conductivities of ZnO nanofluids increased with the increase of particle loading. The enhancement was 11% for 1.1vol% ZnO nanofluid. The effective thermal conductivities of the ZnO nanofluids can not be predicted by the present models.

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