Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Sr(Ag 1− x Li x ) 2 Se 2 and [Sr 3 Se 2 ][(Ag 1− x Li x ) 2 Se 2 ] Tunable Direct Band Gap Semiconductors

Journal Article · · Angewandte Chemie
 [1];  [2];  [1];  [3];  [3];  [4];  [4];  [1];  [5]
  1. Materials Science Division Argonne National Laboratory 9700 South Cass Avenue Lemont IL 60439 USA
  2. United States Naval Academy 121 Blake Rd Annapolis MD 21402 USA
  3. Department of Chemistry Northwestern University Evanston IL 60208 USA
  4. NSF's ChemMatCARS the University of Chicago 9700 South Cass Avenue Argonne IL 60439 USA
  5. Materials Science Division Argonne National Laboratory 9700 South Cass Avenue Lemont IL 60439 USA, Department of Chemistry Northwestern University Evanston IL 60208 USA
Abstract

Synthesizing solids in molten fluxes enables the rapid diffusion of soluble species at temperatures lower than in solid‐state reactions, leading to crystal formation of kinetically stable compounds. In this study, we demonstrate the effectiveness of mixed hydroxide and halide fluxes in synthesizing complex Sr/Ag/Se in mixed LiOH/LiCl. We have accessed a series of two‐dimensional Sr(Ag 1− x Li x ) 2 Se 2 layered phases. With increased LiOH/LiCl ratio or reaction temperature, Li partially substituted Ag to form solid solutions of Sr(Ag 1− x Li x ) 2 Se 2 with x up to 0.45. In addition, a new type of intergrowth compound [Sr 3 Se 2 ][(Ag 1− x Li x ) 2 Se 2 ] was synthesized upon further reaction of Sr(Ag 1− x Li x ) 2 Se 2 with SrSe. Both Sr(Ag 1− x Li x ) 2 Se 2 and [Sr 3 Se 2 ][(Ag 1− x Li x ) 2 Se 2 ] exhibit a direct band gap, which increases with increasing Li substitution ( x ). Therefore, the band gap of Sr(Ag 1− x Li x ) 2 Se 2 can be precisely tuned via fine‐tuning x that is controlled by only the flux ratio and temperature.

Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1958356
Journal Information:
Angewandte Chemie, Journal Name: Angewandte Chemie Journal Issue: 14 Vol. 135; ISSN 0044-8249
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

References (45)

Elektrochemische Synthese von Ba2Ag8S7, einem quasi-eindimensionalen Bariumsilber(I)-sulfid mit S2−- und S22−-Liganden journal October 1999
Electrochemical Synthesis of Ba2Ag8S7, a Quasi-One-Dimensional Barium Silver(I) Sulfide Containing Mixed S2−/S22− Ligands journal October 1999
Accelerated Discovery and Design of Ultralow Lattice Thermal Conductivity Materials Using Chemical Bonding Principles journal December 2021
Auf der Suche nach neuen Materialien: Kristallzucht von quaternären und höherwertigen Oxiden in Flussmitteln journal January 2012
Chalkogenide durch Reduktion ihrer Dioxide in ultra‐alkalischen Medien journal September 2021
Materials Discovery by Flux Crystal Growth: Quaternary and Higher Order Oxides journal January 2012
Chalcogenides by Reduction of their Dioxides in Ultra‐Alkaline Media journal September 2021
Reaktionen und Gleichgewichte in Alkalihydroxydschmelzen. III. Peroxydgleichgewichte journal January 1959
�ber die Darstellung von CaSe, SrSe, BaSe und EuSe durch Reaktion der Metalle mit Selenwasserstoff in fl�ssigem Ammoniak journal December 1977
BaAg2S2, ein Thioargentat im CaAl2Si2-Strukturtyp journal September 1997
Synthesis and Structure of a New Ternary Silver-Rich Sulfide BaAg8S5 journal May 1999
Materials discovery by crystal growth: Lanthanide metal containing oxides of the platinum group metals (Ru, Os, Ir, Rh, Pd, Pt) from molten alkali metal hydroxides journal July 2009
First-principle study of structural, electronic and elastic properties of SrS, SrSe and SrTe under pressure journal December 2003
Application of Wavelet Transforms to Experimental Spectra:  Smoothing, Denoising, and Data Set Compression journal January 1997
Clusters, Assemble: Growth of Intermetallic Compounds from Metal Flux Reactions journal December 2017
Synthesis and Thermoelectric Properties of Noble Metal Ternary Chalcogenide Systems of Ag–Au–Se in the Forms of Alloyed Nanoparticles and Colloidal Nanoheterostructures journal September 2016
Two-Dimensional CsAg 5 Te 3– x S x Semiconductors: Multi-anion Chalcogenides with Dynamic Disorder and Ultralow Thermal Conductivity journal September 2018
The Benefit of Leaving Your Synthetic Comfort Zone: Reactions in Uncommon Media journal December 2020
Stepwise Li Substitution Induced Structure Evolution and Improved Nonlinear Optical Performance for Diamond-like Sulfides journal July 2021
Substitution of Li for Cu in Cu 2 ZnSnS 4 : Toward Wide Band Gap Absorbers with Low Cation Disorder for Thin Film Solar Cells journal February 2017
Discovery-Synthesis, Design, and Prediction of Chalcogenide Phases journal March 2017
Tunable Direct Band Gap of β-CuGaO2 and β-LiGaO2 Solid Solutions in the Full Visible Range journal March 2019
Synthesis and Characterization of Ba2Ag2Se2(Se2) journal June 2019
Targeted Crystal Growth of Rare Earth Intermetallics with Synergistic Magnetic and Electrical Properties: Structural Complexity to Simplicity journal February 2015
Molten alkali-metal polychalcogenides as reagents and solvents for the synthesis of new chalcogenide materials journal July 1990
Hydroflux Crystal Growth of Platinum Group Metal Hydroxides: Sr 6 NaPd 2 (OH) 17 , Li 2 Pt(OH) 6 , Na 2 Pt(OH) 6 , Sr 2 Pt(OH) 8 , and Ba 2 Pt(OH) 8 journal June 2012
Crystal Growth of New Hexahydroxometallates Using a Hydroflux journal September 2013
Layered Oxysulfides Sr 2 MnO 2 Cu 2 m - 0.5 S m +1 ( m = 1, 2, and 3) as Insertion Hosts for Li Ion Batteries journal September 2006
New Compounds and Phase Selection of Nickel Sulfides via Oxidation State Control in Molten Hydroxides journal August 2021
Low Thermal Conductivity in Heteroanionic Materials with Layers of Homoleptic Polyhedra journal February 2022
Binary systems sodium sulfide-sodium hydroxide and sodium carbonate-sodium hydroxide journal April 1985
Accelerated discovery of a large family of quaternary chalcogenides with very low lattice thermal conductivity journal June 2021
A two-dimensional type I superionic conductor journal July 2021
Direct thermal neutron detection by the 2D semiconductor 6LiInP2Se6 journal January 2020
Discovery of chalcogenides structures and compositions using mixed fluxes journal November 2022
Coherent approach to two-dimensional heterolayered oxychalcogenides using molten hydroxides journal August 2022
Ternary and quaternary chalcogenides of Group IB elements journal October 1999
Growth of single crystals from metallic fluxes journal June 1992
New materials physics journal November 2019
Vegard’s law journal March 1991
Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides journal September 1976
Turning Down the Heat: Design and Mechanism in Solid-State Synthesis journal March 1993
Hydroflux syntheses and crystal structures of hydrogarnets Ba3[RE(OH)6]2 (RE = Sc, Y, Ho–Lu) journal October 2020
Flux Growth of Phosphide and Arsenide Crystals journal April 2020
The Acidic and Basic Properties of Oxides. journal January 1947

Similar Records

Sr(Ag1-xLix)2Se2 and [Sr3Se2][(Ag1-xLix)2Se2] Tunable Direct Band Gap Semiconductors
Journal Article · Thu Jan 26 23:00:00 EST 2023 · Angewandte Chemie (International Edition) · OSTI ID:1969738

Sol-gel synthesis, structural and superconducting properties of (Hg{sub 1-y}Se{sub y})Sr{sub 2}(Y{sub 1-x}Ca{sub x})Cu{sub 2}O{sub 6+{delta}}
Journal Article · Fri Nov 14 23:00:00 EST 2008 · Journal of Solid State Chemistry · OSTI ID:21212114

Related Subjects