All-Inorganic Germanium Nanocrystal Films by Cationic Ligand Exchange

Nano Letters
Lance M WheelerNathan R Neale

Abstract

We introduce a new paradigm for group IV nanocrystal surface chemistry based on room temperature surface activation that enables ionic ligand exchange. Germanium nanocrystals synthesized in a gas-phase plasma reactor are functionalized with labile, cationic alkylammonium ligands rather than with traditional covalently bound groups. We employ Fourier transform infrared and (1)H nuclear magnetic resonance spectroscopies to demonstrate the alkylammonium ligands are freely exchanged on the germanium nanocrystal surface with a variety of cationic ligands, including short inorganic ligands such as ammonium and alkali metal cations. This ionic ligand exchange chemistry is used to demonstrate enhanced transport in germanium nanocrystal films following ligand exchange as well as the first photovoltaic device based on an all-inorganic germanium nanocrystal absorber layer cast from solution. This new ligand chemistry should accelerate progress in utilizing germanium and other group IV nanocrystals for optoelectronic applications.

References

Jan 11, 2005·Nature Materials·Steven A McDonaldEdward H Sargent
Jun 23, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Xuegeng LiMark T Swihart
Oct 8, 2005·Science·Dmitri V Talapin, Christopher B Murray
Apr 10, 2008·Journal of the American Chemical Society·Matt LawArthur J Nozik
Aug 30, 2008·Nano Letters·Joseph M LutherArthur J Nozik
Nov 8, 2008·Science·Anshu Pandey, Philippe Guyot-Sionnest
Feb 25, 2009·Journal of the American Chemical Society·Doh C LeeVictor I Klimov
Jun 11, 2009·Dalton Transactions : an International Journal of Inorganic Chemistry·El'mira Kh LermontovaGalina S Zaitseva
Jun 13, 2009·Science·Maksym V KovalenkoDmitri V Talapin
Jun 11, 2010·Nano Letters·Zachary C HolmanUwe R Kortshagen
Mar 10, 2011·Journal of the American Chemical Society·Jordan W ThomsonGeoffrey A Ozin
Apr 6, 2011·Nano Letters·Kai-Yuan ChengRussell J Holmes
Apr 28, 2011·Nano Letters·Zachary C Holman, Uwe R Kortshagen
Jun 19, 2012·Chemical Communications : Chem Comm·Yong-Mao LinC Buddie Mullins
Jan 17, 2013·Nano Letters·Florian Maier-FlaigUli Lemmer
Jul 31, 2013·Nature Communications·Lance M WheelerUwe R Kortshagen
May 27, 2014·Nature Materials·Chia-Hao M ChuangMoungi G Bawendi
Jun 19, 2014·Nature Communications·Claudiu M CirloganuVictor I Klimov
Nov 15, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Gillian CollinsColm O'Dwyer
Dec 4, 2014·Nature Nanotechnology·Matthew C BeardArthur J Nozik
Apr 25, 2015·Scientific Reports·Ryan W CrispJoseph M Luther
May 30, 2015·Langmuir : the ACS Journal of Surfaces and Colloids·Yixuan YuBrian A Korgel
Feb 7, 2013·The Journal of Physical Chemistry Letters·Daniel A RuddyNathan R Neale
Oct 17, 2013·The Journal of Physical Chemistry Letters·Lance M WheelerUwe R Kortshagen

❮ Previous
Next ❯

Citations

Aug 9, 2016·Chemical Reviews·Rachel D HarrisEmily A Weiss
May 30, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·B F P McVeyR D Tilley
Jan 16, 2021·Accounts of Chemical Research·Sara R SmockRichard L Brutchey
May 29, 2018·ACS Applied Materials & Interfaces·Shinya KanoMinoru Fujii
Jul 26, 2018·Journal of the American Chemical Society·Lance M WheelerJoseph M Luther

❮ 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.