Large area deposition of widegap copper indium selenide absorbers

Author

Menezes, Shalini ; Yan Li

Author_Institution

InterPhases Solar, Inc., Moorpark, CA, USA

fYear

2013

fDate

16-21 June 2013

Firstpage

2615

Lastpage

2620

Abstract

Electrochemical growth of copper-indium-selenide (CIS) compounds is investigated, aimed at providing a non-vacuum large-area deposition method. CIS film formation is identified with cyclic voltammetry. Its growth, monitored with XRF, shows excellent composition and thickness uniformity. The results agree with SIMS profiles and XRD data, indicating conversion of initially formed binary phases to homogenous ternary compounds. They demonstrate that one can avail of thermodynamic reaction control to produce surprisingly stoichiometric CIS compositions over a wide range of process parameters. This outcome enables extending the benefits of industrial scale roll-to-roll electrodeposition to obtain widegap CIS PV absorbers on flexible foil.

Keywords

X-ray diffraction; X-ray emission spectra; X-ray fluorescence analysis; copper compounds; electrochemistry; electrodeposition; energy gap; fluorescence; indium compounds; secondary ion mass spectra; semiconductor growth; semiconductor thin films; stoichiometry; ternary semiconductors; thermodynamics; voltammetry (chemical analysis); CIS film; CuIn₃Se₅; SIMS profile; X-ray diffraction; X-ray fluorescence; XRD; XRF; band gap; binary phase; composition uniformity; cyclic voltammetry; electrochemical growth; flexible foil; homogenous ternary compounds; industrial scale roll-to-roll electrodeposition; nonvacuum large-area deposition; secondary ion mass spectra; stoichiometric CIS composition; thermodynamic reaction; thickness uniformity; widegap copper indium selenide absorbers; Atomic layer deposition; Compounds; Electric potential; Films; Metals; Photovoltaic cells; Substrates; CuIn3Se5; composition profiles; electrodeposition; ordered defect chalcopyrite; reaction mechanism; thin film solar cell;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialists Conference (PVSC), 2013 IEEE 39th

Conference_Location

Tampa, FL

Type

conf

DOI

10.1109/PVSC.2013.6745010

Filename

6745010