Photoluminescence-based measurements of the energy gap and diffusion length of Zn_3P_2

Kimball, Gregory M. and Müller, Astrid M. and Lewis, Nathan S. and Atwater, Harry A. (2009) Photoluminescence-based measurements of the energy gap and diffusion length of Zn_3P_2. Applied Physics Letters, 95 (11). Art. No. 112103. ISSN 0003-6951. doi:10.1063/1.3225151. https://resolver.caltech.edu/CaltechAUTHORS:20091013-093453282

Preview

PDF - Published Version
See Usage Policy.
320kB

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20091013-093453282

Abstract

The steady-state photoluminescence spectra of zinc phosphide (Zn_3P_2) wafers have revealed a fundamental indirect band gap at 1.38 eV, in close proximity to the direct band gap at 1.50 eV. These values are consistent with the values for the indirect and direct band gaps obtained from analysis of the complex dielectric function deduced from spectroscopic ellipsometric measurements. Bulk minority carrier lifetimes of 20 ns were observed by time-resolved photoluminescence decay measurements, implying minority-carrier diffusion lengths of ≥ 7 µm.

Item Type:

Article

Related URLs:

URL	URL Type	Description
http://dx.doi.org/10.1063/1.3225151	DOI	Article
http://link.aip.org/link/?APPLAB/95/112103/1	Publisher	Article

ORCID:

Author	ORCID
Müller, Astrid M.	0000-0002-2785-6808
Lewis, Nathan S.	0000-0001-5245-0538
Atwater, Harry A.	0000-0001-9435-0201

Additional Information:

©2009 American Institute of Physics. Received 29 June 2009; accepted 20 August 2009; published 14 September 2009. This work was supported by the Office of Energy Efficiency and Renewable Energy, U.S. Department of Energy under Grant No. DE-FG36-08GO18006, as well as Caltech Center for Sustainable Energy Research (CCSER). We acknowledge use of facilities supported by the Beckman Institute Laser Resource Center (BILRC). One of us (G.M.K.) acknowledges support under an NDSEG graduate fellowship.

Funders:

Funding Agency	Grant Number
Department of Energy (DOE)	DE-FG36-08GO18006
Caltech Center for Sustainable Energy Research	UNSPECIFIED
Caltech Beckman Institute	UNSPECIFIED
National Defense Science and Engineering Graduate (NDSEG) Fellowship	UNSPECIFIED

Subject Keywords:

carrier lifetime, dielectric function, energy gap, photoluminescence, time resolved spectra, zinc compounds

Issue or Number:

Classification Code:

PACS 78.55.Hx; 78.20.Ci; 71.45.Gm; 72.20.Jv; 78.47.Cd; 72.80.Jc

DOI:

10.1063/1.3225151

Record Number:

CaltechAUTHORS:20091013-093453282

Persistent URL:

https://resolver.caltech.edu/CaltechAUTHORS:20091013-093453282

Usage Policy:

No commercial reproduction, distribution, display or performance rights in this work are provided.

ID Code:

16318

Collection:

CaltechAUTHORS

Deposited By:

George Porter

Deposited On:

13 Oct 2009 18:39

Last Modified:

08 Nov 2021 23:26

Repository Staff Only: item control page