Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > On-Chip Photodetection: Two-dimensional material heterojunctions hetero-integration

CREDIT
by Ruijuan Tian, Xuetao Gan, Chen Li, Xiaoqing Chen, Siqi Hu, Linpeng Gu, Dries Van Thourhout, Andres Castellanos-Gomez, Zhipei Sun, Jianlin Zhao
CREDIT by Ruijuan Tian, Xuetao Gan, Chen Li, Xiaoqing Chen, Siqi Hu, Linpeng Gu, Dries Van Thourhout, Andres Castellanos-Gomez, Zhipei Sun, Jianlin Zhao

Abstract:
Photonic integrated circuits (PICs) use photons as information carriers and are expected to solve the bottleneck problems of microelectronic chips in terms of speed, power consumption and integration density with their advantages of ultra-high transmission speed, low delay, and anti-electromagnetic crosstalk. It is of key significance to promoting breakthroughs in microelectronics technology, quantum information technology, and micro-sensing technology in the "post-Moore era".

On-Chip Photodetection: Two-dimensional material heterojunctions hetero-integration

Changchun, China | Posted on May 13th, 2022

Currently, driven by the application of information technology, photonic integrated chips (PICs) have made great progress. For example, silicon PIC is compatible with the mature CMOS technology for low-cost and large-scale production; Silicon nitride PIC could tolerate moderately high optical power and large fabrication errors; Lithium niobate PIC could achieve perfect electro-optic modulations with low driven voltage and high linearity.

However, one of the handicaps in these PICs is the monolithic integration of waveguides and photodetectors with a single material. To support the light transmission in the waveguide, the PIC materials cannot absorb the optical signal, making it impossible to realize the integrated photodetector out of a single material. To solve this, hetero-integrations of absorptive bulk materials (such as Ge, III-V compound semiconductors, etc.) on PICs have been implemented. It though still present open challenges such as the high costs, complicated fabrication processes and material interface issues.

Recently, two-dimensional (2D) materials have emerged as an attractive photon-absorption material for chip-integrated photodetectors. 2D materials have no surface dangling bonds, which eliminates the lattice-mismatch constraints to hetero-integrate them with PICs. The family of 2D materials has a rich variety of electronic and optical properties, including semi-metallic graphene, insulating boron nitride, semiconducting transition metal dichalcogenides and black phosphorus. As a consequence, chip-integrated photodetectors operating at various spectral ranges could be constructed by choosing appropriate 2D materials.

In a new paper published in Light Science & Application, a research group, led by Professor Xuetao Gan from Key Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, China have reported that integrating van der Waals PN heterojunctions of 2D materials on optical waveguides can provide a promising strategy to realize chip-integrated photodetectors with low dark current, high responsivity, and fast speed.

With the 2D layered structure and no dangling bonds, researchers can stack 2D materials with different properties in different orders by "stacking wood" to form van der Waals heterostructures with atomically flat interfaces. The "arbitrary combination" of van der Waals heterojunctions can not only give the advantages properties of a single material, but also generate novel properties, achieving a leap of 1+1>2, as shown in Figure 1. In this research, the researchers made full use of natural p-doped BP and n-doped MoTe2 for hetero-stacking, and successfully fabricated an efficient van der Waals PN heterojunction. Second, since there are no dangling bonds on the surface of 2D materials, compared with traditional semiconductors, 2D materials do not need to consider lattice mismatch when integrating with various photonic integration platforms. Finally, the preparation of source-drain electrodes can also be integrated on the photonic platform through the "stacking wood" technology and placed on both sides of the material, without the cumbersome processes such as photolithography. This also greatly simplifies the fabrication process of the device and reduces the fabrication cost of the device. This also greatly simplifies the fabrication process of the device, avoiding the contamination of the device interface in processes such as photolithography, which greatly improves the performance of the device.

####

For more information, please click here

Contacts:
Yaobiao Li
Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Office: 86-431-861-76851
Expert Contact

Xuetao Gan
Northwestern Polytechnical University, China

Copyright © Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Paper:

Related News Press

News and information

Robot nose that can “smell” disease on your breath: Scientists develop diagnostic device for identifying compounds unique to particular diseases July 1st, 2022

Efficiently processing high-quality periodic nanostructures with ultrafast laser July 1st, 2022

Photonic synapses with low power consumption and high sensitivity are expected to integrate sensing-memory-preprocessing capabilities July 1st, 2022

New protocol for assessing the safety of nanomaterials July 1st, 2022

Govt.-Legislation/Regulation/Funding/Policy

Solving the solar energy storage problem with rechargeable batteries that can convert and store energy at once June 24th, 2022

Boron nitride nanotube fibers get real: Rice lab creates first heat-tolerant, stable fibers from wet-spinning process June 24th, 2022

UBCO researchers change the game when it comes to activity tracking: Flexible, highly sensitive motion device created by extrusion printing June 17th, 2022

University of Illinois Chicago joins Brookhaven Lab's Quantum Center June 10th, 2022

Possible Futures

Robot nose that can “smell” disease on your breath: Scientists develop diagnostic device for identifying compounds unique to particular diseases July 1st, 2022

Efficiently processing high-quality periodic nanostructures with ultrafast laser July 1st, 2022

Photonic synapses with low power consumption and high sensitivity are expected to integrate sensing-memory-preprocessing capabilities July 1st, 2022

New protocol for assessing the safety of nanomaterials July 1st, 2022

Chip Technology

Photonic synapses with low power consumption and high sensitivity are expected to integrate sensing-memory-preprocessing capabilities July 1st, 2022

Advances in lithium niobate photonics: High performance integrated LN-based photonic devices have developed rapidly in recent years, and many different structures have been demonstrated for various application scenarios—are we about to enter a new era of LN photonics? June 24th, 2022

Advances in lithium niobate photonics: High performance integrated LN-based photonic devices have developed rapidly in recent years, and many different structures have been demonstrated for various application scenarios—are we about to enter a new era of LN photonics? June 24th, 2022

Boron nitride nanotube fibers get real: Rice lab creates first heat-tolerant, stable fibers from wet-spinning process June 24th, 2022

Optical computing/Photonic computing

Efficiently processing high-quality periodic nanostructures with ultrafast laser July 1st, 2022

Photonic synapses with low power consumption and high sensitivity are expected to integrate sensing-memory-preprocessing capabilities July 1st, 2022

Advances in lithium niobate photonics: High performance integrated LN-based photonic devices have developed rapidly in recent years, and many different structures have been demonstrated for various application scenarios—are we about to enter a new era of LN photonics? June 24th, 2022

Advances in lithium niobate photonics: High performance integrated LN-based photonic devices have developed rapidly in recent years, and many different structures have been demonstrated for various application scenarios—are we about to enter a new era of LN photonics? June 24th, 2022

Discoveries

Robot nose that can “smell” disease on your breath: Scientists develop diagnostic device for identifying compounds unique to particular diseases July 1st, 2022

Efficiently processing high-quality periodic nanostructures with ultrafast laser July 1st, 2022

Photonic synapses with low power consumption and high sensitivity are expected to integrate sensing-memory-preprocessing capabilities July 1st, 2022

New protocol for assessing the safety of nanomaterials July 1st, 2022

Announcements

Robot nose that can “smell” disease on your breath: Scientists develop diagnostic device for identifying compounds unique to particular diseases July 1st, 2022

Efficiently processing high-quality periodic nanostructures with ultrafast laser July 1st, 2022

Photonic synapses with low power consumption and high sensitivity are expected to integrate sensing-memory-preprocessing capabilities July 1st, 2022

New protocol for assessing the safety of nanomaterials July 1st, 2022

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters

Robot nose that can “smell” disease on your breath: Scientists develop diagnostic device for identifying compounds unique to particular diseases July 1st, 2022

Efficiently processing high-quality periodic nanostructures with ultrafast laser July 1st, 2022

Photonic synapses with low power consumption and high sensitivity are expected to integrate sensing-memory-preprocessing capabilities July 1st, 2022

New protocol for assessing the safety of nanomaterials July 1st, 2022

Grants/Sponsored Research/Awards/Scholarships/Gifts/Contests/Honors/Records

Solving the solar energy storage problem with rechargeable batteries that can convert and store energy at once June 24th, 2022

Advances in lithium niobate photonics: High performance integrated LN-based photonic devices have developed rapidly in recent years, and many different structures have been demonstrated for various application scenarios—are we about to enter a new era of LN photonics? June 24th, 2022

Advances in lithium niobate photonics: High performance integrated LN-based photonic devices have developed rapidly in recent years, and many different structures have been demonstrated for various application scenarios—are we about to enter a new era of LN photonics? June 24th, 2022

Boron nitride nanotube fibers get real: Rice lab creates first heat-tolerant, stable fibers from wet-spinning process June 24th, 2022

Photonics/Optics/Lasers

Efficiently processing high-quality periodic nanostructures with ultrafast laser July 1st, 2022

Photonic synapses with low power consumption and high sensitivity are expected to integrate sensing-memory-preprocessing capabilities July 1st, 2022

Advances in lithium niobate photonics: High performance integrated LN-based photonic devices have developed rapidly in recent years, and many different structures have been demonstrated for various application scenarios—are we about to enter a new era of LN photonics? June 24th, 2022

Advances in lithium niobate photonics: High performance integrated LN-based photonic devices have developed rapidly in recent years, and many different structures have been demonstrated for various application scenarios—are we about to enter a new era of LN photonics? June 24th, 2022

Printing/Lithography/Inkjet/Inks/Bio-printing/Dyes

Newly developed technique to improve quantum dots color conversion performance: Researchers created perovskite quantum dot microarrays to achieve better results in full-color light-emitting devices and expand potential applications June 10th, 2022

With a zap of light, system switches objects' colors and patterns: "Programmable matter" technique could enable product designers to churn out prototypes with ease May 6th, 2021

New 3D-Bioprinter + Bioink Use Living Cells Straight From Culture Plate: Cell models mimicking natural tissue topography herald new era for biomedical research April 13th, 2021

Weak force has strong impact on nanosheets: Rice lab finds van der Waals force can deform nanoscale silver for optics, catalytic use December 15th, 2020

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project