Laser processing of CZTS thin-films for photovoltaic applications (Conference Presentation)

Stela Canulescu; Mungunshagai Ganskukh; Jørgen Schou

doi:10.1117/12.2294937

14 March 2018 Laser processing of CZTS thin-films for photovoltaic applications (Conference Presentation)

Stela Canulescu, Mungunshagai Ganskukh, Jørgen Schou

Proceedings Volume 10519, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXIII; 105190F (2018) https://doi.org/10.1117/12.2294937
Event: SPIE LASE, 2018, San Francisco, California, United States

Abstract

Extensive research efforts are currently devoted to alternative materials for photovoltaic (PV) applications that can overcome issues of the currently dominating thin film solar cell technologies, namely, such as CdTe and Cu(In, Ga)Se2 (CIGS). In this context, the kesterite compound Cu2ZnSn(S,Se)4 (CZTS) containing earth-abundant and non-toxic elements, as well as an optimal direct bandgap at 1.5 eV, is a promising candidate for PV applications. However, the efficiency of CZTSSe of 12.6% achieved today is still below the ultimate goal of >20% efficiency. In particular, the synthesis of CZTS is rather challenging due to its relatively narrow phase region and good control of the composition is critical for obtaining high performance solar cells. In this paper, we will discuss the synthesis of the quaternary CZTS compound by pulsed laser deposition (PLD). We will present different approaches for the deposition of CZTS: 1) room-temperature deposition followed by post-annealing and 2) growth of CZTS at high temperature. In the former approach, a sulfur evaporation beam assisting the deposition of CZTS is used to compensate for the sulfur loss. Our findings reveal that during ablation of a multicomponent CZTS target, the stoichiometry of the films can vary dramatically from a fluence from 0.2 J/cm2 to 2 J/cm2. In particular, films deposited at a low fluence of 0.2 J/cm2 are Cu-free, and the Cu content in the films increases monotonically with increasing fluence. Interestingly, this effect is less pronounced for ablation of a single-phase CZTS target.

Conference Presentation

Citation Download Citation

Stela Canulescu, Mungunshagai Ganskukh, and Jørgen Schou "Laser processing of CZTS thin-films for photovoltaic applications (Conference Presentation)", Proc. SPIE 10519, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXIII, 105190F (14 March 2018); https://doi.org/10.1117/12.2294937

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Solar cells

Photovoltaics

Sulfur

Chemical elements

Copper

Copper indium gallium selenide

Photovoltaic materials

Show All Keywords

Keywords/Phrases

Search In:

Publication Years