Spectrally and Time Resolved Photoluminescence Analysis of the CdS/CdTe Interface in Thin-Film Photovoltaic Solar Cells

Darius Kuciauskas; Ana Kanevce; Joel N. Duenow; Pat Dippo; Matthew Young; Jian V. Li; Dean H. Levi; Timothy A. Gessert

doi:10.1063/1.4803911

Spectrally and Time Resolved Photoluminescence Analysis of the CdS/CdTe Interface in Thin-Film Photovoltaic Solar Cells

Darius Kuciauskas, Ana Kanevce, Joel N. Duenow, Pat Dippo, Matthew Young, Jian V. Li, Dean H. Levi, Timothy A. Gessert

National Renewable Energy Laboratory

Research output: Contribution to journal › Article › peer-review

39 Scopus Citations

Abstract

Light absorption and charge separation in thin-film polycrystalline cadmium telluride (CdTe) photovoltaic (PV) solar cells largely occur in the vicinity of the CdS/CdTe interface. Sulfur alloying at this interface to form CdS _xTe_1x and doping with Cu appear to be important for efficient PV devices. Based on the different band gaps of CdS_xTe _1x and CdTe, we apply spectroscopic and computational photoluminescence (PL) analysis to characterize this interface. We find that Cu concentration changes the dynamics of charge separation and PL emission intensities from the CdS_xTe_1x and CdTe regions. We have determined charge separation lifetime and minority carrier lifetime, and we have estimated minority carrier mobility as 100 cm² V^-1 s ^-1.

Original language	American English
Article number	173902
Number of pages	5
Journal	Applied Physics Letters
Volume	102
Issue number	17
DOIs	https://doi.org/10.1063/1.4803911 https://doi.org/10.1063/1.4803911
State	Published - 29 Apr 2013

NREL Publication Number

NREL/JA-5200-57225

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

Cite this

@article{cb1d93cbb0c3454ba71d7ea6606d0c4d,

title = "Spectrally and Time Resolved Photoluminescence Analysis of the CdS/CdTe Interface in Thin-Film Photovoltaic Solar Cells",

abstract = "Light absorption and charge separation in thin-film polycrystalline cadmium telluride (CdTe) photovoltaic (PV) solar cells largely occur in the vicinity of the CdS/CdTe interface. Sulfur alloying at this interface to form CdS xTe1x and doping with Cu appear to be important for efficient PV devices. Based on the different band gaps of CdSxTe 1x and CdTe, we apply spectroscopic and computational photoluminescence (PL) analysis to characterize this interface. We find that Cu concentration changes the dynamics of charge separation and PL emission intensities from the CdSxTe1x and CdTe regions. We have determined charge separation lifetime and minority carrier lifetime, and we have estimated minority carrier mobility as 100 cm2 V-1 s -1.",

author = "Darius Kuciauskas and Ana Kanevce and Duenow, {Joel N.} and Pat Dippo and Matthew Young and Li, {Jian V.} and Levi, {Dean H.} and Gessert, {Timothy A.}",

year = "2013",

month = apr,

day = "29",

doi = "10.1063/1.4803911",

language = "American English",

volume = "102",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "17",

}

TY - JOUR

T1 - Spectrally and Time Resolved Photoluminescence Analysis of the CdS/CdTe Interface in Thin-Film Photovoltaic Solar Cells

AU - Kuciauskas, Darius

AU - Kanevce, Ana

AU - Duenow, Joel N.

AU - Dippo, Pat

AU - Young, Matthew

AU - Li, Jian V.

AU - Levi, Dean H.

AU - Gessert, Timothy A.

PY - 2013/4/29

Y1 - 2013/4/29

N2 - Light absorption and charge separation in thin-film polycrystalline cadmium telluride (CdTe) photovoltaic (PV) solar cells largely occur in the vicinity of the CdS/CdTe interface. Sulfur alloying at this interface to form CdS xTe1x and doping with Cu appear to be important for efficient PV devices. Based on the different band gaps of CdSxTe 1x and CdTe, we apply spectroscopic and computational photoluminescence (PL) analysis to characterize this interface. We find that Cu concentration changes the dynamics of charge separation and PL emission intensities from the CdSxTe1x and CdTe regions. We have determined charge separation lifetime and minority carrier lifetime, and we have estimated minority carrier mobility as 100 cm2 V-1 s -1.

AB - Light absorption and charge separation in thin-film polycrystalline cadmium telluride (CdTe) photovoltaic (PV) solar cells largely occur in the vicinity of the CdS/CdTe interface. Sulfur alloying at this interface to form CdS xTe1x and doping with Cu appear to be important for efficient PV devices. Based on the different band gaps of CdSxTe 1x and CdTe, we apply spectroscopic and computational photoluminescence (PL) analysis to characterize this interface. We find that Cu concentration changes the dynamics of charge separation and PL emission intensities from the CdSxTe1x and CdTe regions. We have determined charge separation lifetime and minority carrier lifetime, and we have estimated minority carrier mobility as 100 cm2 V-1 s -1.

UR - http://www.scopus.com/inward/record.url?scp=84877276314&partnerID=8YFLogxK

U2 - 10.1063/1.4803911

DO - 10.1063/1.4803911

M3 - Article

AN - SCOPUS:84877276314

SN - 0003-6951

VL - 102

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 17

M1 - 173902

ER -

Spectrally and Time Resolved Photoluminescence Analysis of the CdS/CdTe Interface in Thin-Film Photovoltaic Solar Cells

Abstract

NREL Publication Number

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this