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Title: Nitrogen stabilizes the wurtzite polymorph in ZnSe 1− x Te x thin films

Journal Article · · Journal of Materials Chemistry C
DOI:https://doi.org/10.1039/D2TC02716J· OSTI ID:1891938

Materials based on tetrahedral structural motifs are the most used semiconductor systems in deployed technologies. This holds true for microelectronics based on doped Si (diamond structure), photovoltaics based on CdTe (zinc blende structure), and light emitting diodes based on GaN (wurtzite structure). In these compound examples, the extended crystal structure is determined by modifications to the arrangement of the underlying tetrahedral motifs; controlling this structure is a foundational way to design functionality in semiconductor materials. Here, N-doped ZnSe1-xTex thin films are grown by RF sputtering from compound targets with N2 gas as a N source. Crystalline films form across a large range of growth conditions, and in some N-doped films there is a transformation from the usual zinc blende structure to wurtzite. Depending on the temperature and N2 flow rate during growth, wurtzite can be synthesized across most of the composition range explored, ranging from Te-rich (x ≈ 0.7) to nearly pure ZnSe (x ≈ 0.1). Synchrotron diffraction data show that the wurtzite is phase-pure at N-doped ZnSe0.5Te0.5 alloy compositions grown under some conditions. Temperature-dependent resistivity measurements collected from N-doped ZnSe0.5Te0.5 are well fit by a model dominated by variable range hopping, suggesting defect-mediated transport. Density functional theory calculations that show that dilute N concentrations help stabilize the wurtzite polymorph of ZnSe0.5Te0.5. Electron microscopy reveals voids in the N-doped films’ microstructures. We attribute this more open microstructure—which may also be partially responsible for stabilizing the wurtzite phase—to trapped N2. This work highlights unexpected polytypism in one of the most studied semiconductor systems, motivating a closer look at other semiconductor alloys for similar structural diversity.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS); USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC36-08GO28308; SC0021266
OSTI ID:
1891938
Alternate ID(s):
OSTI ID: 1898370
Report Number(s):
NREL/JA-5K00-83292; JMCCCX
Journal Information:
Journal of Materials Chemistry C, Journal Name: Journal of Materials Chemistry C Vol. 10 Journal Issue: 42; ISSN 2050-7526
Publisher:
Royal Society of Chemistry (RSC)Copyright Statement
Country of Publication:
United Kingdom
Language:
English

References (55)

Direct correlation of crystal structure and optical properties in wurtzite/zinc-blende GaAs nanowire heterostructures journal January 2011
Generalized Gradient Approximation Made Simple journal October 1996
Structure and photoluminescence of wurtzite/zinc-blende heterostructure GaN nanorods journal September 2009
The study of nitrogen doping in ZnSe and ZnSe:Te journal March 1995
Projector augmented-wave method journal December 1994
Soft X-ray spectroscopy with transition-edge sensors at Stanford Synchrotron Radiation Lightsource beamline 10-1 journal November 2019
An open experimental database for exploring inorganic materials journal April 2018
Wurtzite–zinc-blende polytypism in ZnSe onGaAs(111)A journal May 2001
Zincblende-wurtzite phase transformation of ZnSe films by pulsed laser deposition with nitrogen doping journal August 2013
Ultrastructural Characterization of the Lower Motor System in a Mouse Model of Krabbe Disease journal December 2016
Quantitative study of molecularN2trapped in disordered GaN:O films journal December 2004
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Combinatorial Tuning of Structural and Optoelectronic Properties in Cu Zn1−S journal October 2019
Route to High Hole Mobility in GaN via Reversal of Crystal-Field Splitting journal August 2019
GSAS-II : the genesis of a modern open-source all purpose crystallography software package journal March 2013
Anisotropic photonic properties of III–V nanowires in the zinc-blende and wurtzite phase journal January 2012
Automated Adsorption Workflow for Semiconductor Surfaces and the Application to Zinc Telluride journal July 2021
Wide Band Gap Chalcogenide Semiconductors journal April 2020
Zinc-Stabilized Manganese Telluride with Wurtzite Crystal Structure journal July 2018
Doping of ZnTe by molecular beam epitaxy journal April 1994
Femtosecond measurement of nonlinear absorption and refraction in CdS, ZnSe, and ZnS journal October 1994
Anisotropic electronic phase transition in CrN epitaxial thin films journal February 2022
Transport Behavior in Spinel Oxide MgTi 2 O 4 journal September 2014
Ab initiomolecular dynamics for liquid metals journal January 1993
Interstitial nitrogen induced by low-energy ion beam nitridation of AIII–BV semiconductor surfaces journal December 2001
Diameter Scaling of the Optical Band Gap in Individual CdSe Nanowires journal August 2011
Structural and optical properties of high quality zinc-blende/wurtzite GaAs nanowire heterostructures journal December 2009
Time-Resolved Spectroscopy of ZnTe Photocathodes for Solar Fuel Production journal September 2017
Tunable photoelectrochemical performance of Au/BiFeO 3 heterostructure journal January 2016
Broadening of vibrational levels in X-ray absorption spectroscopy of molecular nitrogen in compound semiconductors journal July 2006
The Intermediate Band Solar Cell: Progress Toward the Realization of an Attractive Concept journal January 2010
Molecular-beam epitaxy growth and nitrogen doping of ZnSe1−xTex alloys grown on InP substrates journal October 1999
New semiconductor scintillators ZnSe(Te,O) and integrated radiation detectors based thereon journal June 2001
Metal-insulator transitions in NdNiO 3 thin films journal September 2000
Controlled growth of tetrapod-branched inorganic nanocrystals journal May 2003
Electronic structure of (Zn,Cd)(S,Se)-based polytype superlattices journal April 1995
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Wurtzite materials in alloys of rock salt compounds journal January 2020
Research data infrastructure for high-throughput experimental materials science journal December 2021
Nonlinear optical microscopic examination of structure in polycrystalline ZnSe journal November 1974
Commentary: The Materials Project: A materials genome approach to accelerating materials innovation journal July 2013
Negative-pressure polymorphs made by heterostructural alloying journal April 2018
An Easy Shortcut Synthesis of Size-Controlled Bismuth Nanoparticles and Their Use in the SLS Growth of High-Quality Colloidal Cadmium Selenide Quantum Wires journal February 2010
Observations on the limits top‐type doping in ZnSe journal August 1994
Why Does Wurtzite Form in Nanowires of III-V Zinc Blende Semiconductors? journal October 2007
Carrier Mobility and Shallow Impurity States in ZnSe and ZnTe journal April 1963
COMBIgor: Data-Analysis Package for Combinatorial Materials Science journal May 2019
Zinc-blende–wurtzite polytypism in semiconductors journal October 1992
Manipulation of charge transfer in vertically aligned epitaxial ferroelectric KNbO3 nanowire array photoelectrodes journal May 2017
Metal-Insulator Transition journal October 1968
STEM EDX Nitrogen Mapping of Nanoinclusions in Milky Diamonds from Juina, Brazil, Using a Windowless Silicon Drift Detector System journal May 2016
A ferroelectric photocatalyst for enhancing hydrogen evolution: polarized particulate suspension journal January 2014
Spontaneous polarization field-enhanced charge separation for an iron oxide photo-catalyst journal January 2017
Nonlocal pseudopotential calculations for the electronic structure of eleven diamond and zinc-blende semiconductors journal July 1976
Python Materials Genomics (pymatgen): A robust, open-source python library for materials analysis journal February 2013