Yissum - Research Development Company of the Hebrew University

Heavily Doped Semiconductor Nanocrystal Quantum Dots

Posted by Yissum - Research Development Company of the Hebrew UniversityResponsive · Innovative Products and Technologies · Israel

Summary of the technology

Received Kamin on June and will start research on September 2016
On June 2016 this project was unified with project 2946 and a unified project summary was uploaded to 2946.
Project ID : 16-2011-2602

Yissum - Research Development Company of the Hebrew University

Description of the technology

Method enables tight control of electronic properties


Nanotechnology, Chemistry & Materials, Micro & Opto Electronics , Nano Materials and Nano Structures, Semiconductors, Nanoprocesses , Electronic / Optic / Electrooptic / Photonic, Nanocrystals, Quantum Dots and Rods

Development Stage

Ongoing Research

Patent Status

Patent application filed in United States


  • Intentionally inserting impurity atoms into a crystal, or doping, is the basis for the widespread application of semiconductors in electronic and electro-optic components.
  • An additional way to tune the properties of semiconductor structures is by controlling their size and dimensionality via quantum confinement effects.
  • Colloidal semiconductor nanocrystals are a family of materials that have size-dependent optical and electronic properties, and lend themselves to the simple manufacture of nanocrystal-based light-emitting diodes, solar cells, and transistor devices.
  • However, doping has proven elusive for strongly confined colloidal semiconductor nanocrystals.

Our Innovation

Simple, room-temperature method for doping semiconductor nanocrystals with metal impurities. Exquisite control of the electronic properties, including the band gap and Fermi energy achieved through changing the dopant type and concentration.

Illustration of dopants and their related electronic wavefunctions within a semiconductor nanocrystal. Left is the theoretical case of a single dopant. Right is the case of multiple dopants.The diameter of the nanocrystals can be tuned between 2-10 nm, providing further contrl on their properties.

Key Features

  • First demonstration of electronic doping of quantum confined semiconductor nanocrystals under heavily doped regime
  • Provided understanding of the effects of heavy doping in semiconductor nanocrystals
  • Simple doping method in solution at room temperature using metal dopant atoms developed

Development Milestones

  • Project in research phase, moving towards demonstrating a device based on doped nanocrystals

The Opportunity

  • The ability to closely control the synthesis of doped nanocrystals, together with a better understanding of heavily-doped colloidal Quantum Dots opens potential avenues for solar cells, thin-film transistors, and diverse electronic and optoelectronic devices.

Project manager

Matt Zarek

Project researchers

Uri Banin
HUJI, Faculty of Science
The Center for Nanoscience and Nanotechnology

Related keywords

  • Electronics, Microelectronics
  • Nanotechnologies related to electronics & microelectronics
  • Micro and Nanotechnology related to Electronics and Microelectronics
  • Chemistry
  • Materials Technology
  • Environment
  • Waste Management
  • Clean Production / Green Technologies
  • Some other electronics related
  • Chemicals and Materials
  • Pollution and Recycling Related
  • Micro & Opto Electronics
  • semiconductors

About Yissum - Research Development Company of the Hebrew University

Technology Transfer Office from Israel

Yissum Research Development Company of the Hebrew University of Jerusalem Ltd. Founded in 1964 to protect and commercialize the Hebrew University’s intellectual property. Ranked among the top technology transfer companies, Yissum has registered over 8,900 patents covering 2,500 inventions; has licensed out 800 technologies and has spun-off 90 companies. Products that are based on Hebrew University technologies and were commercialized by Yissum generate today over $2 Billion in annual sales.

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