Semiconductors

Reductive pathways in molten inorganic salts enable colloidal synthesis of III-V semiconductor nanocrystals

Daniel Morton — Thu, 24 Oct 2024 19:58:51 +0000

Reductive pathways in molten inorganic salts enable colloidal synthesis of III-V semiconductor nanocrystals Daniel Morton Thu, 10/24/2024 - 13:58

SCIENCE, 2024, 386, 6720, 401-407

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RASEI Researchers unlock a 'new synthetic frontier' for quantum dots

Daniel Morton — Thu, 24 Oct 2024 19:50:17 +0000

RASEI Researchers unlock a 'new synthetic frontier' for quantum dots Daniel Morton Thu, 10/24/2024 - 13:50

Lauren Scholz

Read the Full Paper here

University of Chicago Press Release

In a breakthrough for nanotechnology, researchers have discovered a new way to synthesize quantum dot nanocrystals using molten salt as a medium. Traditional methods to create these materials required organic solvents, which cannot withstand the high temperatures needed for certain semiconductor materials, particularly those combining elements from groups III and V on the periodic table. By using superheated molten sodium chloride, scientists were able to synthesize these semiconductor nanocrystals, paving the way for improved applications in fields like quantum computing, LED lighting, and solar technology.

Led by a team from the University of Chicago and collaborating institutions, including RASEI Fellows Sadegh Yazdi and Gordana Dukovic, this novel method also opens new avenues for materials science by enabling the synthesis of previously inaccessible nanocrystal compositions. The technique addresses long-standing challenges by providing a high-temperature environment without degrading the materials. Researchers hope this advance will contribute to new types of devices and materials, marking a significant expansion in the range of accessible quantum dot technologies.

For a more information, please see the press release from The University of Chicago.

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Direct and Inverse Photoelectron Spectroscopy Evidence for a Revised Picture of Electronic States of Negative Polarons in n-Doped C60

Daniel Morton — Mon, 21 Oct 2024 15:19:42 +0000

Direct and Inverse Photoelectron Spectroscopy Evidence for a Revised Picture of Electronic States of Negative Polarons in n-Doped C60 Daniel Morton Mon, 10/21/2024 - 09:19

ADVANCED FUNCTIONAL MATERIALS, 2024, 2415336

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POSE Fall 2024 Kickoff Workshop

Daniel Morton — Mon, 07 Oct 2024 22:43:24 +0000

POSE Fall 2024 Kickoff Workshop Daniel Morton Mon, 10/07/2024 - 16:43

Daniel Morton

In early October of 2024, RASEI hosted the kickoff workshop for POSE, a new community being brought together to address some of the most critical challenges we face to do with plastics and polymers.

Polymer Solutions for the Environment, or POSE, seeks to establish a Center that will bring together expertise around the development of a circular polymer economy.

Plastics and polymers are critical materials in the modern age, forming the building blocks of everything from electronics to packaging, but this versatility comes with a cost, namely the waste and infiltration of the environment by microplastics.

This workshop brought together thought leaders in the polymer sector, from a cross section of academic, national lab and industrial organizations. The goal was to explore how best the POSE community can build a program that complements existing efforts in the field to drive the science and policy forward.

Three areas of focus were discussed, including the development of a circular polymer economy, the development of polymers that are needed for a just clean energy transition, and the integration of the science and technology research with policy, economics and social sciences.

It was a great meeting with more than 60 participants who came together to discuss ideas, present their research and approaches, and help shape the goals and directions of this nascent community.

10/07/2024

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Solvent-mediated oxide hydrogenation in layered cathodes

Anonymous — Thu, 12 Sep 2024 06:00:00 +0000

Solvent-mediated oxide hydrogenation in layered cathodes Anonymous (not verified) Thu, 09/12/2024 - 00:00

SCIENCE, 2024, 385, 6714, 1230-1236

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Low-Temperature Synthesis of Stable CaZn2P2 Zintl Phosphide Thin Films as Candidate Top Absorbers

Daniel Morton — Sun, 01 Sep 2024 21:16:40 +0000

Low-Temperature Synthesis of Stable CaZn2P2 Zintl Phosphide Thin Films as Candidate Top Absorbers Daniel Morton Sun, 09/01/2024 - 15:16

ADVANCED ENERGY MATERIALS, 2024, 2402640

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BES: Stimuli-responsive electronic energy levels at interfaces between organic semiconductors and perovskites & 2D semiconductors

Anonymous — Fri, 16 Aug 2024 06:00:00 +0000

BES: Stimuli-responsive electronic energy levels at interfaces between organic semiconductors and perovskites & 2D semiconductors Anonymous (not verified) Fri, 08/16/2024 - 00:00

Friday August 16, 2024

SEEC S228, Sievers Room

12:00 - 1:00 PM

Prof. Norbert Koch hosted a broad discussion around approaches for exploring the energy levels of organic semiconductors, with a particular focus on interactions across interfaces. This provided a didactic overview for researchers working on organic semiconductors, 2D semiconductors and perovskites.

Norbert Koch | Humboldt-Universitat zu Berlin

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Colossal Core/Shell CdSe/CdS Quantum Dot Emitters

Anonymous — Fri, 26 Jul 2024 06:00:00 +0000

Colossal Core/Shell CdSe/CdS Quantum Dot Emitters Anonymous (not verified) Fri, 07/26/2024 - 00:00

ACS NANO, 2024, 18, 31, 20726-20739

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Ligand Equilibrium Influences Photoluminescence Blinking in CsPbBr3: A Change Point Analysis of Widefield Imaging Data

Anonymous — Tue, 09 Jul 2024 06:00:00 +0000

Ligand Equilibrium Influences Photoluminescence Blinking in CsPbBr3: A Change Point Analysis of Widefield Imaging Data Anonymous (not verified) Tue, 07/09/2024 - 00:00

ACS NANO, 2024, 18, 29, 19208-19219

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Room-temperature spin injection across a chiral perovskite/III–V interface

Anonymous — Wed, 19 Jun 2024 06:00:00 +0000

Room-temperature spin injection across a chiral perovskite/III–V interface Anonymous (not verified) Wed, 06/19/2024 - 00:00

NATURE, 2024, 10.1038/s41586-024-07560-4

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