Wet chemical etched CdTe thin film solar cells

Seungju Chun, Seunghun Lee, Younghun Jung, Jong Seong Bae, Ji Hyun Kim, Donghwan Kim

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Wet chemical etching process on as-deposited CdTe surface using nitric-phosphoric (NP) acid improved the efficiency of CdS/CdTe solar cells from 10.1% to 13.8%. Nitric-phosphoric (NP) acid solution etched native oxide (TeO 2) layer and resolved excess cadmium on CdTe surface. After the heat treatment process activated the CdCl 2, CdO layer which was believed to be a diffusion barrier of chlorine did not grow on the etched CdTe surface and new (V Cd 2--2Cl Te 1+) 0 complexes was located at E V + 0.045 eV. New (V Cd 2--2Cl Te 1+) 0 complexes acted as a shallow acceptors and induced to improve V oc and J sc. The surface of CdTe thin film has been studied using Scanning Electron Microscope (SEM), X-ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and low temperature Photoluminescence (PL).

Original languageEnglish
Pages (from-to)211-216
Number of pages6
JournalCurrent Applied Physics
Volume13
Issue number1
DOIs
Publication statusPublished - 2013 Jan 1

Fingerprint

solar cells
phosphoric acid
nitric acid
Phosphoric acid
Nitric acid
thin films
Diffusion barriers
Wet etching
Chlorine
Cadmium
Oxides
cadmium
chlorine
Solar cells
Photoluminescence
heat treatment
x rays
Electron microscopes
X ray photoelectron spectroscopy
electron microscopes

Keywords

  • CdCl activated heat treatment
  • CdTe thin film solar cells
  • Low temperature photoluminescence (PL)
  • Nitric-phosphoric (NP) etching
  • X-ray photoelectron spectroscopy (XPS)

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Wet chemical etched CdTe thin film solar cells. / Chun, Seungju; Lee, Seunghun; Jung, Younghun; Bae, Jong Seong; Kim, Ji Hyun; Kim, Donghwan.

In: Current Applied Physics, Vol. 13, No. 1, 01.01.2013, p. 211-216.

Research output: Contribution to journalArticle

Chun, Seungju ; Lee, Seunghun ; Jung, Younghun ; Bae, Jong Seong ; Kim, Ji Hyun ; Kim, Donghwan. / Wet chemical etched CdTe thin film solar cells. In: Current Applied Physics. 2013 ; Vol. 13, No. 1. pp. 211-216.
@article{386a32beff7f49219f88dea7290c6d1b,
title = "Wet chemical etched CdTe thin film solar cells",
abstract = "Wet chemical etching process on as-deposited CdTe surface using nitric-phosphoric (NP) acid improved the efficiency of CdS/CdTe solar cells from 10.1{\%} to 13.8{\%}. Nitric-phosphoric (NP) acid solution etched native oxide (TeO 2) layer and resolved excess cadmium on CdTe surface. After the heat treatment process activated the CdCl 2, CdO layer which was believed to be a diffusion barrier of chlorine did not grow on the etched CdTe surface and new (V Cd 2--2Cl Te 1+) 0 complexes was located at E V + 0.045 eV. New (V Cd 2--2Cl Te 1+) 0 complexes acted as a shallow acceptors and induced to improve V oc and J sc. The surface of CdTe thin film has been studied using Scanning Electron Microscope (SEM), X-ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and low temperature Photoluminescence (PL).",
keywords = "CdCl activated heat treatment, CdTe thin film solar cells, Low temperature photoluminescence (PL), Nitric-phosphoric (NP) etching, X-ray photoelectron spectroscopy (XPS)",
author = "Seungju Chun and Seunghun Lee and Younghun Jung and Bae, {Jong Seong} and Kim, {Ji Hyun} and Donghwan Kim",
year = "2013",
month = "1",
day = "1",
doi = "10.1016/j.cap.2012.07.015",
language = "English",
volume = "13",
pages = "211--216",
journal = "Current Applied Physics",
issn = "1567-1739",
publisher = "Elsevier",
number = "1",

}

TY - JOUR

T1 - Wet chemical etched CdTe thin film solar cells

AU - Chun, Seungju

AU - Lee, Seunghun

AU - Jung, Younghun

AU - Bae, Jong Seong

AU - Kim, Ji Hyun

AU - Kim, Donghwan

PY - 2013/1/1

Y1 - 2013/1/1

N2 - Wet chemical etching process on as-deposited CdTe surface using nitric-phosphoric (NP) acid improved the efficiency of CdS/CdTe solar cells from 10.1% to 13.8%. Nitric-phosphoric (NP) acid solution etched native oxide (TeO 2) layer and resolved excess cadmium on CdTe surface. After the heat treatment process activated the CdCl 2, CdO layer which was believed to be a diffusion barrier of chlorine did not grow on the etched CdTe surface and new (V Cd 2--2Cl Te 1+) 0 complexes was located at E V + 0.045 eV. New (V Cd 2--2Cl Te 1+) 0 complexes acted as a shallow acceptors and induced to improve V oc and J sc. The surface of CdTe thin film has been studied using Scanning Electron Microscope (SEM), X-ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and low temperature Photoluminescence (PL).

AB - Wet chemical etching process on as-deposited CdTe surface using nitric-phosphoric (NP) acid improved the efficiency of CdS/CdTe solar cells from 10.1% to 13.8%. Nitric-phosphoric (NP) acid solution etched native oxide (TeO 2) layer and resolved excess cadmium on CdTe surface. After the heat treatment process activated the CdCl 2, CdO layer which was believed to be a diffusion barrier of chlorine did not grow on the etched CdTe surface and new (V Cd 2--2Cl Te 1+) 0 complexes was located at E V + 0.045 eV. New (V Cd 2--2Cl Te 1+) 0 complexes acted as a shallow acceptors and induced to improve V oc and J sc. The surface of CdTe thin film has been studied using Scanning Electron Microscope (SEM), X-ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and low temperature Photoluminescence (PL).

KW - CdCl activated heat treatment

KW - CdTe thin film solar cells

KW - Low temperature photoluminescence (PL)

KW - Nitric-phosphoric (NP) etching

KW - X-ray photoelectron spectroscopy (XPS)

UR - http://www.scopus.com/inward/record.url?scp=84866058834&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84866058834&partnerID=8YFLogxK

U2 - 10.1016/j.cap.2012.07.015

DO - 10.1016/j.cap.2012.07.015

M3 - Article

VL - 13

SP - 211

EP - 216

JO - Current Applied Physics

JF - Current Applied Physics

SN - 1567-1739

IS - 1

ER -