scholarly journals Room temperature long-range coherent exciton polariton condensate flow in lead halide perovskites

2018 ◽  
Vol 4 (10) ◽  
pp. eaau0244 ◽  
Author(s):  
Rui Su ◽  
Jun Wang ◽  
Jiaxin Zhao ◽  
Jun Xing ◽  
Weijie Zhao ◽  
...  
Keyword(s):  
Long Range ◽  
High Speed ◽  
Room Temperature ◽  
Optoelectronic Devices ◽  
Lead Bromide ◽  
All Optical ◽  
Halide Perovskites ◽  
Integrated Logic ◽  
Lead Halide ◽  
Speed Propagation

Novel technological applications significantly favor alternatives to electrons toward constructing low power–consuming, high-speed all-optical integrated optoelectronic devices. Polariton condensates, exhibiting high-speed coherent propagation and spin-based behavior, attract considerable interest for implementing the basic elements of integrated optoelectronic devices: switching, transport, and logic. However, the implementation of this coherent polariton condensate flow is typically limited to cryogenic temperatures, constrained by small exciton binding energy in most semiconductor microcavities. Here, we demonstrate the capability of long-range nonresonantly excited polariton condensate flow at room temperature in a one-dimensional all-inorganic cesium lead bromide (CsPbBr3) perovskite microwire microcavity. The polariton condensate exhibits high-speed propagation over macroscopic distances of 60 μm while still preserving the long-range off-diagonal order. Our findings pave the way for using coherent polariton condensate flow for all-optical integrated logic circuits and polaritonic devices operating at room temperature.

Bromopropane as a Novel Bromine Precursor for the Completely Amine Free Colloidal Synthesis of Ultra-Stable and Highly Luminescent Green-Emitting Cesium Lead Bromide (CsPbBr3) Perovskite Nanocrystals

Nanoscale ◽  
2021 ◽  
Author(s):  
Syed Akhil ◽  
V.G.Vasavi Dutt ◽  
Nimai Mishra
Keyword(s):  
Optoelectronic Devices ◽  
Colloidal Synthesis ◽  
Ambient Conditions ◽  
Active Materials ◽  
Perovskite Nanocrystals ◽  
Lead Bromide ◽  
Halide Perovskite ◽  
Lead Halide ◽  
Poor Stability

Recently lead halide perovskite nanocrystals (PNCs) have attracted intense interest as promising active materials for optoelectronic devices. However, their extensive applications are still hampered by poor stability in ambient conditions....

Reducing the leakage current for a CsPbBr3 detector via asymmetric area electrodes and heterostructures

2021 ◽  
Author(s):  
YingFeng Ruan ◽  
Pengju Guo ◽  
Zhiping Zheng ◽  
Qiuyun Fu ◽  
Rongda Zhou ◽  
...  
Keyword(s):  
Leakage Current ◽  
Room Temperature ◽  
Next Generation ◽  
Typical Representative ◽  
X Ray ◽  
Inorganic Lead ◽  
Halide Perovskites ◽  
Lead Halide

As a typical representative of all-inorganic lead halide perovskites, cesium lead bromine (CsPbBr3) has been regarded as the workhorse of next-generation room temperature X-ray detectors in recent years.

Formation and Encapsulation of All-Inorganic Lead Halide Perovskites at Room Temperature in Metal–Organic Frameworks

2019 ◽  
Vol 10 (9) ◽  
pp. 2270-2277 ◽  
Author(s):  
Ji-Hyun Cha ◽  
Kyungkyou Noh ◽  
Wenping Yin ◽  
Yongju Lee ◽  
Yongmin Park ◽  
...  
Keyword(s):  
Room Temperature ◽  
Metal Organic Frameworks ◽  
Inorganic Lead ◽  
Metal Organic ◽  
Halide Perovskites ◽  
Lead Halide

scholarly journals It's a trap! On the nature of localised states and charge trapping in lead halide perovskites

2020 ◽  
Vol 7 (2) ◽  
pp. 397-410 ◽  
Author(s):  
Handong Jin ◽  
Elke Debroye ◽  
Masoumeh Keshavarz ◽  
Ivan G. Scheblykin ◽  
Maarten B. J. Roeffaers ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Materials Science ◽  
Optoelectronic Devices ◽  
Charge Trapping ◽  
Scientific Interest ◽  
Halide Perovskites ◽  
Localised States ◽  
Halide Perovskite ◽  
Lead Halide

The recent surge of scientific interest for lead halide perovskite semiconductors and optoelectronic devices has seen a mix of materials science sub-fields converge on the same “magical” crystal structure.

scholarly journals Local Versus Long-Range Diffusion Effects of Photoexcited States on Radiative Recombination in Organic-Inorganic Lead Halide Perovskites

2015 ◽  
Vol 2 (9) ◽  
pp. 1500136 ◽  
Author(s):  
Milan Vrućinić ◽  
Clemens Matthiesen ◽  
Aditya Sadhanala ◽  
Giorgio Divitini ◽  
Stefania Cacovich ◽  
...  
Keyword(s):  
Long Range ◽  
Radiative Recombination ◽  
Inorganic Lead ◽  
Diffusion Effects ◽  
Halide Perovskites ◽  
Lead Halide

Room-temperature electroluminescence from two-dimensional lead halide perovskites

2016 ◽  
Vol 109 (15) ◽  
pp. 151101 ◽  
Author(s):  
Renzhi Li ◽  
Chang Yi ◽  
Rui Ge ◽  
Wei Zou ◽  
Lu Cheng ◽  
...  
Keyword(s):  
Room Temperature ◽  
Two Dimensional ◽  
Halide Perovskites ◽  
Lead Halide

scholarly journals Chelating Agent: The Health Protector of Researchers in Lead Halide Perovskite Laboratory

2020 ◽  
Author(s):  
Yu-Hao Deng
Keyword(s):  
Low Cost ◽  
Health Hazard ◽  
Optoelectronic Devices ◽  
Chelating Agent ◽  
The Body ◽  
Lead Ions ◽  
Laboratory Safety ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Lead Halide

<p>Lead halide perovskites have achieved substantial success in various optoelectronic devices owing to their remarkable physical properties. However, lead (Pb) as a heavy metal, long-lasting toxic to the body has become a health hazard for researchers. How to completely remove the residual lead in the laboratory and prevent lead from entering the human body have always been an important topic in laboratory safety. Here we develop an operable method to treat lead sources with low-cost and eco-friendly chelating agent (EDTA-2Na), which can reduce the concentration of free lead ions to 10<sup>-11 </sup>ppm theoretically. Moreover, experiments have demonstrated that the chelating agent possess a strong ability on the removal of lead ions from the lab surface, gloves and lab coats. This approach paves the way to protect the health of researchers in lead halide perovskite laboratory. </p>

scholarly journals Microfluidic Approach for Lead Halide Perovskite Flexible Phototransistors

Electronics ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1852
Author(s):  
Fatemeh Khorramshahi ◽  
Arash Takshi
Keyword(s):  
Room Temperature ◽  
Lead Iodide ◽  
Current Modulation ◽  
Facile Fabrication ◽  
Halide Perovskites ◽  
P Type ◽  
Methylammonium Lead Iodide ◽  
Source Structure ◽  
Polycrystalline Form ◽  
Lead Halide

Lead halide perovskites possess outstanding optical characteristics that can be employed in the fabrication of phototransistors. However, due to low current modulation at room temperature, sensitivity to the ambient environment, lack of patterning techniques and low carrier mobility of polycrystalline form, investigation in perovskite phototransistors has been limited to rigid substrates such as silicon and glass to improve the film quality. Here, we report on room temperature current modulation in a methylammonium lead iodide perovskite (MAPbI3) flexible transistor made by an extremely cheap and facile fabrication process. The proposed phototransistor has the top-gate configuration with a lateral drain–channel–source structure. The device performed in the linear and saturation regions both in the dark and under white light in different current ranges according to the illumination conditions. The transistor showed p-type transport characteristics and the field effect mobility of the device was calculated to be ~1.7 cm2 V−1 s−1. This study is expected to contribute to the development of MAPbI3 flexible phototransistors.

Investigation of Emission Behaviour of Perovskite Nanocrystals into TiO2 Nano to Microsphere

2021 ◽  
Author(s):  
Abha Jha ◽  
Hari Shankar ◽  
Prasenjit Kar
Keyword(s):  
Optoelectronic Devices ◽  
Promising Material ◽  
Perovskite Nanocrystals ◽  
Term Stability ◽  
Long Term Stability ◽  
Halide Perovskites ◽  
Lead Halide

Organic-inorganic methylammonium lead halide perovskites nanocrystals have emerged as a promising material for optoelectronic devices. But due to the lack of long-term stability of perovskite nanocrystals, its applications have been...

Sign in / Sign up

Export Citation Format

Share Document