Synthesis and surface chemistry of Zn3P2

Gregory M. Kimball, Nathan S Lewis, Harry A. Atwater

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Zinc phosphide (Zn3P2) is a promising alternative to traditional materials (e.g. CIGS, CdTe, a-Si) for thin film photovoltaics. Open circuit voltage in Zn3P2 cells has been limited by Fermi-level pinning due to surfaces states and heterojunction interdiffusion, motivating the need to prepare interfaces that are electrically passive and chemically inert. We investigated the surface chemistry of Zn3P 2 via etching with bromine in methanol and passivation with ammonium sulfide in t-butanol. The treatment decreases surface oxidation as determined by x-ray photoelectron spectroscopy and provides a stable, low-defect interface as monitored by steady-state photoluminescence. Magnesium Schottky diodes fabricated with sulfur-passivated interfaces show evidence of enhanced barrier heights in comparison to control devices.

Original languageEnglish
Title of host publicationConference Record of the IEEE Photovoltaic Specialists Conference
DOIs
Publication statusPublished - 2008
Event33rd IEEE Photovoltaic Specialists Conference, PVSC 2008 - San Diego, CA, United States
Duration: May 11 2008May 16 2008

Other

Other33rd IEEE Photovoltaic Specialists Conference, PVSC 2008
CountryUnited States
CitySan Diego, CA
Period5/11/085/16/08

Fingerprint

Bromine
Surface states
Open circuit voltage
Photoelectron spectroscopy
Surface chemistry
Fermi level
Butenes
Passivation
Magnesium
Surface treatment
Heterojunctions
Etching
Photoluminescence
Diodes
Methanol
Zinc
Sulfur
X rays
Thin films
Oxidation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering

Cite this

Kimball, G. M., Lewis, N. S., & Atwater, H. A. (2008). Synthesis and surface chemistry of Zn3P2 . In Conference Record of the IEEE Photovoltaic Specialists Conference [4922747] https://doi.org/10.1109/PVSC.2008.4922747

Synthesis and surface chemistry of Zn3P2 . / Kimball, Gregory M.; Lewis, Nathan S; Atwater, Harry A.

Conference Record of the IEEE Photovoltaic Specialists Conference. 2008. 4922747.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kimball, GM, Lewis, NS & Atwater, HA 2008, Synthesis and surface chemistry of Zn3P2 . in Conference Record of the IEEE Photovoltaic Specialists Conference., 4922747, 33rd IEEE Photovoltaic Specialists Conference, PVSC 2008, San Diego, CA, United States, 5/11/08. https://doi.org/10.1109/PVSC.2008.4922747
Kimball GM, Lewis NS, Atwater HA. Synthesis and surface chemistry of Zn3P2 . In Conference Record of the IEEE Photovoltaic Specialists Conference. 2008. 4922747 https://doi.org/10.1109/PVSC.2008.4922747
Kimball, Gregory M. ; Lewis, Nathan S ; Atwater, Harry A. / Synthesis and surface chemistry of Zn3P2 . Conference Record of the IEEE Photovoltaic Specialists Conference. 2008.
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