MOCVD precursor delivery monitored and controlled using UV spectroscopy

Brian J. Rappoli; William J. DeSisto; Tobin J. Marks; John A. Belot

doi:10.1557/proc-474-69

MOCVD precursor delivery monitored and controlled using UV spectroscopy

Brian J. Rappoli^*, William J. DeSisto, Tobin J. Marks, John A. Belot

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Conference article › peer-review

Abstract

The glyme adducts of bis(1,1,1,5,5,5-hexafluoro-2,4-pentanedionate)barium, Ba(hfac)₂·glyme, are frequently employed as precursors in the MOCVD fabrication of HTSC thin films. The physical properties of these precursors can be modified by changing the glyme ligand in the barium complex. In this study, gas phase concentrations of two barium complexes as a function of purge time and bubbler temperature have been examined by in-situ UV spectroscopy. Also presented are the details of a UV spectrophotometric-based feedback control system designed to maintain constant gas phase concentration of 2,2,6,6-tetramethyl-3,5-heptadionate (thd) precursors, Cu(thd)₂ and Y(thd)₃, during MOCVD growth of mixed metal oxide films.

Original language	English (US)
Pages (from-to)	69-75
Number of pages	7
Journal	Materials Research Society Symposium - Proceedings
Volume	477
DOIs	https://doi.org/10.1557/proc-474-69
State	Published - Jan 1 1997
Event	Proceedings of the 1997 MRS Spring Meeting - San Francisco, CA, USA Duration: Mar 31 1997 → Apr 3 1997

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1557/proc-474-69

Cite this

@article{9236d6043a5e466e949db31b2a42270b,

title = "MOCVD precursor delivery monitored and controlled using UV spectroscopy",

abstract = "The glyme adducts of bis(1,1,1,5,5,5-hexafluoro-2,4-pentanedionate)barium, Ba(hfac)2·glyme, are frequently employed as precursors in the MOCVD fabrication of HTSC thin films. The physical properties of these precursors can be modified by changing the glyme ligand in the barium complex. In this study, gas phase concentrations of two barium complexes as a function of purge time and bubbler temperature have been examined by in-situ UV spectroscopy. Also presented are the details of a UV spectrophotometric-based feedback control system designed to maintain constant gas phase concentration of 2,2,6,6-tetramethyl-3,5-heptadionate (thd) precursors, Cu(thd)2 and Y(thd)3, during MOCVD growth of mixed metal oxide films.",

author = "Rappoli, {Brian J.} and DeSisto, {William J.} and Marks, {Tobin J.} and Belot, {John A.}",

year = "1997",

month = jan,

day = "1",

doi = "10.1557/proc-474-69",

language = "English (US)",

volume = "477",

pages = "69--75",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

note = "Proceedings of the 1997 MRS Spring Meeting ; Conference date: 31-03-1997 Through 03-04-1997",

}

TY - JOUR

T1 - MOCVD precursor delivery monitored and controlled using UV spectroscopy

AU - Rappoli, Brian J.

AU - DeSisto, William J.

AU - Marks, Tobin J.

AU - Belot, John A.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - The glyme adducts of bis(1,1,1,5,5,5-hexafluoro-2,4-pentanedionate)barium, Ba(hfac)2·glyme, are frequently employed as precursors in the MOCVD fabrication of HTSC thin films. The physical properties of these precursors can be modified by changing the glyme ligand in the barium complex. In this study, gas phase concentrations of two barium complexes as a function of purge time and bubbler temperature have been examined by in-situ UV spectroscopy. Also presented are the details of a UV spectrophotometric-based feedback control system designed to maintain constant gas phase concentration of 2,2,6,6-tetramethyl-3,5-heptadionate (thd) precursors, Cu(thd)2 and Y(thd)3, during MOCVD growth of mixed metal oxide films.

AB - The glyme adducts of bis(1,1,1,5,5,5-hexafluoro-2,4-pentanedionate)barium, Ba(hfac)2·glyme, are frequently employed as precursors in the MOCVD fabrication of HTSC thin films. The physical properties of these precursors can be modified by changing the glyme ligand in the barium complex. In this study, gas phase concentrations of two barium complexes as a function of purge time and bubbler temperature have been examined by in-situ UV spectroscopy. Also presented are the details of a UV spectrophotometric-based feedback control system designed to maintain constant gas phase concentration of 2,2,6,6-tetramethyl-3,5-heptadionate (thd) precursors, Cu(thd)2 and Y(thd)3, during MOCVD growth of mixed metal oxide films.

UR - http://www.scopus.com/inward/record.url?scp=0031346404&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031346404&partnerID=8YFLogxK

U2 - 10.1557/proc-474-69

DO - 10.1557/proc-474-69

M3 - Conference article

AN - SCOPUS:0031346404

SN - 0272-9172

VL - 477

SP - 69

EP - 75

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

T2 - Proceedings of the 1997 MRS Spring Meeting

Y2 - 31 March 1997 through 3 April 1997

ER -

MOCVD precursor delivery monitored and controlled using UV spectroscopy

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this