Enhancement of Hot Electron Flow in Plasmonic Nanodiodes by Incorporating PbS Quantum Dots

ACS Applied Materials & Interfaces
Changhwan LeeJeong Young Park

Abstract

The enhancement of hot electron generation using plasmonic nanostructures is a promising strategy for developing photovoltaic devices. Here, we show that hot electron flow generated in plasmonic Au/TiO2 nanodiodes by incident light can be amplified when PbS quantum dots are deposited onto the surface of the nanodiodes. The effect is attributed to efficient extraction of hot electrons via a three-dimensional Schottky barrier, thus giving new pathways for hot electron transfer. We also demonstrate a correlation between the photocurrent and Schottky barrier height when using PbS quantum dots with varying size and ligand treatments that allow us to control the electric properties (e.g., band gap and Fermi level, respectively) of the PbS quantum dots. This simple method introduces a new technique for further improving the power conversion efficiency of thin-film photovoltaic devices.

References

Feb 7, 2003·Nature·Eric W McFarland, Jing Tang
Aug 13, 2004·Chemical Communications : Chem Comm·Yang Tian, Tetsu Tatsuma
May 19, 2005·Journal of the American Chemical Society·Yang Tian, Tetsu Tatsuma
Sep 29, 2009·ACS Nano·Iwan MoreelsZeger Hens
Nov 19, 2009·Journal of the American Chemical Society·Gabor A SomorjaiJeong Y Park
Feb 20, 2010·Nature Materials·Harry A Atwater, Albert Polman
May 10, 2011·Science·Mark W KnightNaomi J Halas
May 24, 2011·Nature Chemistry·Phillip ChristopherSuljo Linic
Sep 16, 2011·Nano Letters·Young Keun LeeJeong Young Park
Oct 26, 2011·Nano Letters·Fuming Wang, Nicholas A Melosh
Nov 24, 2011·Nature Materials·Suljo LinicDavid B Ingram
Mar 5, 2013·Nano Letters·Mark W KnightNaomi J Halas
Mar 19, 2013·Journal of the American Chemical Society·Hyekyoung ChoiSohee Jeong
Oct 22, 2013·Nature Nanotechnology·P James Schuck
Feb 8, 2014·Nano Letters·Hamidreza ChalabiMark L Brongersma
May 20, 2014·Nano Letters·Wei Li, Jason Valentine
May 28, 2014·ACS Nano·Syed MubeenMartin Moskovits
Sep 6, 2014·Nature Materials·Delia J Milliron
Mar 21, 2015·Chemical Reviews·Jeong Young ParkGabor A Somorjai
Jun 3, 2015·Nature Communications·Marco BernardiSteven G Louie
Jul 15, 2015·Nature Communications·Bob Y ZhengNaomi J Halas
Dec 30, 2015·Journal of the American Chemical Society·Ju Young WooSohee Jeong
Jan 25, 2017·ACS Nano·Cheng ZhangXiaofeng Li

❮ Previous
Next ❯

Citations

Feb 16, 2021·ACS Applied Materials & Interfaces·Beomjoon JeonJeong Young Park
Feb 20, 2021·Nanotechnology·Mincheol KangJeong Young Young Park
Apr 4, 2019·ACS Applied Materials & Interfaces·Beomjoon JeonJeong Young Park

❮ 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.