Skip to content

Impact of Sb and Na Doping on the Surface Electronic Landscape of Cu2ZnSnS4 Thin Films

Research output: Contribution to journalArticle

Standard

Impact of Sb and Na Doping on the Surface Electronic Landscape of Cu2ZnSnS4 Thin Films. / Tiwari, Devendra; Cattelan, Mattia; Harniman, Robert L.; Sarua, Andrei; Fox, Neil; Koehler, Tristan; Klenk, Reiner; Fermin, David J.

In: ACS Energy Letters, Vol. 3, No. 12, 14.12.2018, p. 2977-2982.

Research output: Contribution to journalArticle

Harvard

APA

Vancouver

Author

Tiwari, Devendra ; Cattelan, Mattia ; Harniman, Robert L. ; Sarua, Andrei ; Fox, Neil ; Koehler, Tristan ; Klenk, Reiner ; Fermin, David J. / Impact of Sb and Na Doping on the Surface Electronic Landscape of Cu2ZnSnS4 Thin Films. In: ACS Energy Letters. 2018 ; Vol. 3, No. 12. pp. 2977-2982.

Bibtex

@article{0b702ffa659745a0bf47713703052862,
title = "Impact of Sb and Na Doping on the Surface Electronic Landscape of Cu2ZnSnS4 Thin Films",
abstract = "Open-circuit voltage deficiency is the key limiting factor in Cu2ZnSnS4 (CZTS) thin-film solar cells, which is commonly associated with band tails and deep gap states arising from elemental disorder. The introduction of dopants such as Na and Sb has led to improvement in device performance, yet their effects on the optoelectronic properties of CZTS are yet to be fully elucidated. In this Letter, we unraveled the effect of Sb and Na:Sb co-doping on the surface energy landscape of solution-processed CZTS films employing energy-filtered photoelectron emission microscopy. In the absence of the additives, 150 nm resolution photoemission maps reveal oscillations in the local effective work function as well as areas of low photoemission energy threshold. The introduction of dopants substantially reshapes the photoemission maps, which we rationalize in terms of Cu:Zn and Sn disorder. Finally, we establish unprecedented correlations between the photoemission landscape of thin films and the performance of over 200 devices.",
author = "Devendra Tiwari and Mattia Cattelan and Harniman, {Robert L.} and Andrei Sarua and Neil Fox and Tristan Koehler and Reiner Klenk and Fermin, {David J.}",
year = "2018",
month = "12",
day = "14",
doi = "10.1021/acsenergylett.8b02081",
language = "English",
volume = "3",
pages = "2977--2982",
journal = "ACS Energy Letters",
issn = "2380-8195",
publisher = "American Chemical Society",
number = "12",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Impact of Sb and Na Doping on the Surface Electronic Landscape of Cu2ZnSnS4 Thin Films

AU - Tiwari, Devendra

AU - Cattelan, Mattia

AU - Harniman, Robert L.

AU - Sarua, Andrei

AU - Fox, Neil

AU - Koehler, Tristan

AU - Klenk, Reiner

AU - Fermin, David J.

PY - 2018/12/14

Y1 - 2018/12/14

N2 - Open-circuit voltage deficiency is the key limiting factor in Cu2ZnSnS4 (CZTS) thin-film solar cells, which is commonly associated with band tails and deep gap states arising from elemental disorder. The introduction of dopants such as Na and Sb has led to improvement in device performance, yet their effects on the optoelectronic properties of CZTS are yet to be fully elucidated. In this Letter, we unraveled the effect of Sb and Na:Sb co-doping on the surface energy landscape of solution-processed CZTS films employing energy-filtered photoelectron emission microscopy. In the absence of the additives, 150 nm resolution photoemission maps reveal oscillations in the local effective work function as well as areas of low photoemission energy threshold. The introduction of dopants substantially reshapes the photoemission maps, which we rationalize in terms of Cu:Zn and Sn disorder. Finally, we establish unprecedented correlations between the photoemission landscape of thin films and the performance of over 200 devices.

AB - Open-circuit voltage deficiency is the key limiting factor in Cu2ZnSnS4 (CZTS) thin-film solar cells, which is commonly associated with band tails and deep gap states arising from elemental disorder. The introduction of dopants such as Na and Sb has led to improvement in device performance, yet their effects on the optoelectronic properties of CZTS are yet to be fully elucidated. In this Letter, we unraveled the effect of Sb and Na:Sb co-doping on the surface energy landscape of solution-processed CZTS films employing energy-filtered photoelectron emission microscopy. In the absence of the additives, 150 nm resolution photoemission maps reveal oscillations in the local effective work function as well as areas of low photoemission energy threshold. The introduction of dopants substantially reshapes the photoemission maps, which we rationalize in terms of Cu:Zn and Sn disorder. Finally, we establish unprecedented correlations between the photoemission landscape of thin films and the performance of over 200 devices.

UR - http://www.scopus.com/inward/record.url?scp=85058787224&partnerID=8YFLogxK

U2 - 10.1021/acsenergylett.8b02081

DO - 10.1021/acsenergylett.8b02081

M3 - Article

VL - 3

SP - 2977

EP - 2982

JO - ACS Energy Letters

JF - ACS Energy Letters

SN - 2380-8195

IS - 12

ER -