Preparation and Properties of Evaporated CdTe Films Compared with Single-Crystal CdTe: Progress Report No. 5; November 1, 1981 - January 31, 1982

Preparation and Properties of Evaporated CdTe Films Compared with Single-Crystal CdTe: Progress Report No. 5; November 1, 1981 - January 31, 1982

Research output: NREL › Subcontract Report

Abstract

The hot-wall vacuum evaporator system has been put into use with successful deposition of seven thin films of n-type CdTe on glass. Microprobe analysis indicated that the films were stoichiometric CdTe. Optical transmission showed a well-defined absorption edge. Film resistivities on glass were reduced from 1.7 x 10^8 ohm-cm to 6 x 10^4 ohm-cm by In doping; film resistivities under AM1.5illumination are 2.0 x 10^4 and 5 x 10^2 ohm-cm respectively compared to the dark values given above. All the features of the system seem encouraging. A detailed summary of absorption constant vs wavelength data for CdTe has been assembled for both single crystal and thin film materials. The absorption constant for thin film material appears to vary from 2 x 10^4 cm^-1 at 8000A to 10^5 cm^-1 at5000A; single crystal values may be slightly higher.

Original language	American English
Number of pages	17
State	Published - 1982

Bibliographical note

Work performed by Department of Materials Science and Engineering, Stanford University, Stanford, California

NREL Publication Number

SERI/PR-9330-1-T5

Other Report Number

SERI/PR-9330-1-T5

Keywords

CdTe films single-crystal
evaporated
hot-wall vacuum evaporator
solar

Access to Document

https://www.nrel.gov/docs/legosti/old/9330-1-T5.pdf

Cite this

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title = "Preparation and Properties of Evaporated CdTe Films Compared with Single-Crystal CdTe: Progress Report No. 5; November 1, 1981 - January 31, 1982",

abstract = "The hot-wall vacuum evaporator system has been put into use with successful deposition of seven thin films of n-type CdTe on glass. Microprobe analysis indicated that the films were stoichiometric CdTe. Optical transmission showed a well-defined absorption edge. Film resistivities on glass were reduced from 1.7 x 10^8 ohm-cm to 6 x 10^4 ohm-cm by In doping; film resistivities under AM1.5illumination are 2.0 x 10^4 and 5 x 10^2 ohm-cm respectively compared to the dark values given above. All the features of the system seem encouraging. A detailed summary of absorption constant vs wavelength data for CdTe has been assembled for both single crystal and thin film materials. The absorption constant for thin film material appears to vary from 2 x 10^4 cm^-1 at 8000A to 10^5 cm^-1 at5000A; single crystal values may be slightly higher.",

keywords = "CdTe films single-crystal, evaporated, hot-wall vacuum evaporator, solar",

author = "NREL",

note = "Work performed by Department of Materials Science and Engineering, Stanford University, Stanford, California",

year = "1982",

language = "American English",

type = "Other",

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TY - GEN

T1 - Preparation and Properties of Evaporated CdTe Films Compared with Single-Crystal CdTe: Progress Report No. 5; November 1, 1981 - January 31, 1982

AU - NREL, null

N1 - Work performed by Department of Materials Science and Engineering, Stanford University, Stanford, California

PY - 1982

Y1 - 1982

N2 - The hot-wall vacuum evaporator system has been put into use with successful deposition of seven thin films of n-type CdTe on glass. Microprobe analysis indicated that the films were stoichiometric CdTe. Optical transmission showed a well-defined absorption edge. Film resistivities on glass were reduced from 1.7 x 10^8 ohm-cm to 6 x 10^4 ohm-cm by In doping; film resistivities under AM1.5illumination are 2.0 x 10^4 and 5 x 10^2 ohm-cm respectively compared to the dark values given above. All the features of the system seem encouraging. A detailed summary of absorption constant vs wavelength data for CdTe has been assembled for both single crystal and thin film materials. The absorption constant for thin film material appears to vary from 2 x 10^4 cm^-1 at 8000A to 10^5 cm^-1 at5000A; single crystal values may be slightly higher.

AB - The hot-wall vacuum evaporator system has been put into use with successful deposition of seven thin films of n-type CdTe on glass. Microprobe analysis indicated that the films were stoichiometric CdTe. Optical transmission showed a well-defined absorption edge. Film resistivities on glass were reduced from 1.7 x 10^8 ohm-cm to 6 x 10^4 ohm-cm by In doping; film resistivities under AM1.5illumination are 2.0 x 10^4 and 5 x 10^2 ohm-cm respectively compared to the dark values given above. All the features of the system seem encouraging. A detailed summary of absorption constant vs wavelength data for CdTe has been assembled for both single crystal and thin film materials. The absorption constant for thin film material appears to vary from 2 x 10^4 cm^-1 at 8000A to 10^5 cm^-1 at5000A; single crystal values may be slightly higher.

KW - CdTe films single-crystal

KW - evaporated

KW - hot-wall vacuum evaporator

KW - solar

M3 - Subcontract Report

ER -

Preparation and Properties of Evaporated CdTe Films Compared with Single-Crystal CdTe: Progress Report No. 5; November 1, 1981 - January 31, 1982

Abstract

Bibliographical note

NREL Publication Number

Other Report Number

Keywords

Access to Document

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Cite this