Impact ionization by hot carriers in a black phosphorus field effect transistor

Nature Communications
Faisal AhmedWon Jong Yoo

Abstract

The strong Coulombic interactions in miniaturized structures can lead to efficient carrier multiplication, which is essential for many-body physics and design of efficient photonic devices beyond thermodynamic conversion limits. However, carrier multiplication has rarely been realized in layered semiconducting materials despite strong electronic interactions. Here, we report the experimental observation of unusual carrier multiplication in a multilayer black phosphorus device. Electric field-dependent Hall measurements confirm a substantial increase of carrier density in multilayer black phosphorus channel, which is attributed to the impact ionization by energetic carriers. This mechanism relies on the generation of self-heating induced charge carriers under the large electric field due to competition between electron-electron and electron-phonon interactions in the direct and narrow band gap (0.3 eV) of the multilayer black phosphorus. These findings point the way toward utilization of carrier multiplication to enhance the performance of electronics and optoelectronics devices based on two-dimensional materials.

References

Oct 8, 2011·Science·Nathaniel M GaborPablo Jarillo-Herrero
Dec 22, 2011·Nature Communications·H HiroriK Tanaka
Jun 21, 2013·ACS Nano·Young Duck KimYun Daniel Park
Jun 25, 2013·Nature Materials·Branimir Radisavljevic, Andras Kis
Mar 4, 2014·Nature Nanotechnology·Likai LiYuanbo Zhang
Oct 21, 2014·ACS Nano·Saptarshi DasAndreas Roelofs
Oct 28, 2014·Nano Letters·Han WangShu-jen Han
Jan 17, 2015·Physical Chemistry Chemical Physics : PCCP·Guangzhao QinGang Su
Apr 11, 2015·Nature Communications·Rostislav A DoganovBarbaros Özyilmaz
May 1, 2015·Nanoscale·Faisal AhmedWon Jong Yoo
May 20, 2015·Nature Nanotechnology·Likai LiYuanbo Zhang
Jun 16, 2015·Nature Nanotechnology·Young Duck KimYun Daniel Park
Aug 19, 2015·ACS Nano·Jinshui MiaoChuan Wang
Sep 9, 2015·Nano Letters·Michael EngelPhaedon Avouris
Jan 26, 2016·Advanced Materials·Xiaochi LiuWon Jong Yoo

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.