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Primeur weekly 2019-02-25

Special

Astronomers publish new sky map detecting hundreds of thousands of previously unknown galaxies ...

LOFAR and APERTIF telescope systems tooled with machine learning and FPGA/GPU technology make cosmic explosions more visible to astronomers ...

Focus

Over 700 million euro of budget allocated to e-Infrastructure related projects in H2020 - close to 600 million euro to HPC related projects ...

German Government reconfirms its support for supercomputing development on a national and European scale ...

Quantum computing

Dutch King opens Microsoft Quantum Lab on TU Delft campus ...

ISARA Corp. unveils tools to simplify and accelerate quantum-safe cryptography roll-out ...

Exploring the global landscape of quantum technology research ...

Focus on Europe

International research collaboration computes climate past, present, and future ...

Supercomputing Frontiers Europe again in Poland ...

Middleware

Open Compute Project announces updated market forecast ...

Excelero appoints HPC industry visionary Sven Breuner as Field CTO ...

Hardware

vScaler to perform ResNet benchmarks on the NVIDIA DGX-2 server ...

Cray elects Stephen Gold to Board of Directors ...

Atos helps CALMIP achieve leading calculation results with BullSequana supercomputer ...

Indian Prime Minister Shri Narendra Modi launches PARAM Shivay at the Indian Institute of Technology ...

HDR 200G InfiniBand sets new performance records, accelerating multiple high-performance computing and Artificial Intelligence platforms around the world ...

Supermicro expands Intelligent Edge product portfolio to address emerging AI and 5G technologies ...

Applications

HLRS Visualization supports Stuttgart 21 Construction ...

Lorentz-eScience competition 2020 to issue Call for Applications ...

Supercomputers target bovine tuberculosis ...

NESAP hosts first NERSC-9 GPU hackathon for application developers ...

Artificial Intelligence allows for identification of new cancer genes ...

Novel material properties of hybrid perovskite nanostructures for next-generation non-linear electronic devices ...

Clarkson University awarded National Science Foundation Research Experience for Undergraduate Site on High Performance Computing ...

The Cloud

Hyperion Research releases Cloud Application Assessment Tool ...

Novel material properties of hybrid perovskite nanostructures for next-generation non-linear electronic devices


22 Feb 2019 Daejeon - A research team from the Korea Advanced Institute of Science and Technology (KAIST) reported a novel non-linear device with the founding property coming from perovskite nanowires. They showed that hybrid perovskite-derived, inorganic-framework nanowires can acquire semi-metallicity, and proposed negative differential resistance (NDR) devices with excellent NDR characteristics that resulted from a novel quantum-hybridization NDR mechanism, implying the potential of perovskite nanowires to be realized in next-generation electronic devices.

Organic-inorganic hybrid halide perovskites have recently emerged as prominent candidates for photonic applications due to their excellent opto-electronic properties as well as their low cost and facile synthesis processes. Prominent progresses have been already made for devices including solar cells, light-emitting diodes, lasers and photodetectors.

However, research on electronic devices based on hybrid halide perovskites has not been actively pursued compared with their photonic device counterparts.

Professor Yong-Hoon Kim from the School of Electrical Engineering and his team took a closer look at low-dimensional organic-inorganic halide perovskite materials, which have enhanced quantum confinement effects, and particularly focused on the recently synthesized trimethylsulfonium (TMS) lead triiodide (CH3)3SPbI3.

Using supercomputer simulations, the team first showed that stripping the (CH3)3S or TMS organic ligands from the TMS PbI3 perovskite nanowires results in semi-metallic PbI3 columns, which contradicts the conventional assumption of the semiconducting or insulating characteristics of the inorganic perovskite framework.

Utilizing the semi-metallic PbI3 inorganic framework as the electrode, the team designed a tunneling junction device from perovskite nanowires and found that they exhibit excellent non-linear negative differential resistance (NDR) behaviour. The NDR property is a key to realizing next-generation, ultra-low-power, and multivalued non-linear devices. Furthermore, the team found that this NDR originates from a novel mechanism that involves the quantum-mechanical hybridization between channel and electrode states.

Professor Kim stated: "This research demonstrates the potential of quantum mechanics-based computer simulations to lead developments in advanced nanomaterials and nanodevices. In particular, this research proposes a new direction in the development of a quantum mechanical tunneling device, which was the topic for which the Nobel Laureate in Physics in 1973 was awarded to Dr. Leo Esaki.

This research titled "Semimetallicity and Negative Differential Resistance from Hybrid Halide Perovskite Nanowires", led by Dr. Muhammad Ejaz Khan and PhD candidate Juho Lee, was published online inAdvanced Functional Materials(10.1002/adfm.201807620) on January 7, 2019.
Source: Korea Advanced Institute of Science and Technology - KAIST

Back to Table of contents

Primeur weekly 2019-02-25

Special

Astronomers publish new sky map detecting hundreds of thousands of previously unknown galaxies ...

LOFAR and APERTIF telescope systems tooled with machine learning and FPGA/GPU technology make cosmic explosions more visible to astronomers ...

Focus

Over 700 million euro of budget allocated to e-Infrastructure related projects in H2020 - close to 600 million euro to HPC related projects ...

German Government reconfirms its support for supercomputing development on a national and European scale ...

Quantum computing

Dutch King opens Microsoft Quantum Lab on TU Delft campus ...

ISARA Corp. unveils tools to simplify and accelerate quantum-safe cryptography roll-out ...

Exploring the global landscape of quantum technology research ...

Focus on Europe

International research collaboration computes climate past, present, and future ...

Supercomputing Frontiers Europe again in Poland ...

Middleware

Open Compute Project announces updated market forecast ...

Excelero appoints HPC industry visionary Sven Breuner as Field CTO ...

Hardware

vScaler to perform ResNet benchmarks on the NVIDIA DGX-2 server ...

Cray elects Stephen Gold to Board of Directors ...

Atos helps CALMIP achieve leading calculation results with BullSequana supercomputer ...

Indian Prime Minister Shri Narendra Modi launches PARAM Shivay at the Indian Institute of Technology ...

HDR 200G InfiniBand sets new performance records, accelerating multiple high-performance computing and Artificial Intelligence platforms around the world ...

Supermicro expands Intelligent Edge product portfolio to address emerging AI and 5G technologies ...

Applications

HLRS Visualization supports Stuttgart 21 Construction ...

Lorentz-eScience competition 2020 to issue Call for Applications ...

Supercomputers target bovine tuberculosis ...

NESAP hosts first NERSC-9 GPU hackathon for application developers ...

Artificial Intelligence allows for identification of new cancer genes ...

Novel material properties of hybrid perovskite nanostructures for next-generation non-linear electronic devices ...

Clarkson University awarded National Science Foundation Research Experience for Undergraduate Site on High Performance Computing ...

The Cloud

Hyperion Research releases Cloud Application Assessment Tool ...