Highly Transparent and Low-Resistance Indium-Free ZnO/Ag/ZnO Multilayer Electrodes for Organic Photovoltaic Devices

Jun Ho Kim, Jin Young Na, Sun Kyung Kim, Young Zo Yoo, Tae Yeon Seong

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

We investigated the effect of ZnO layer thickness on the optical and electrical properties of ZnO/Ag/ZnO multilayer films deposited on glass substrates. The transmission window became wider and shifted toward the lower energy side with increasing ZnO thickness. The ZnO/Ag/ZnO (40 nm/18.8 nm/40 nm) multilayer sample showed transmittance of ~96% at 550nm. As the ZnO thickness was increased from 8 nm to 80 nm, the carrier concentration gradually decreased from 1.74 × 10<sup>22</sup> cm<sup>−3</sup> to 4.33 × 10<sup>21</sup> cm<sup>−3</sup>, while the charge mobility varied from 23.8 cm<sup>2</sup>/V-s to 24.8 cm<sup>2</sup>/V-s. With increasing ZnO thickness, the samples exhibited similar sheet resistances of 3.6 Ω/sq to 3.9 Ω/sq, but the resistivity increased by a factor of 4.58. The samples showed smooth surfaces with root-mean-square roughness in the range of 0.47 nm to 0.94 nm. Haacke’s figure of merit (FOM) was calculated for all the samples; the ZnO (40 nm)/Ag (18.8 nm)/ZnO (40 nm) multilayer produced the highest FOM of 148.9 × 10<sup>−3</sup> Ω<sup>−1</sup>.

Original languageEnglish
Pages (from-to)3967-3972
Number of pages6
JournalJournal of Electronic Materials
Volume44
Issue number10
DOIs
Publication statusPublished - 2015 May 27

Fingerprint

Indium
low resistance
indium
Multilayers
Electrodes
electrodes
Multilayer films
Sheet resistance
figure of merit
Carrier concentration
Electric properties
Optical properties
Surface roughness
Glass
Substrates
transmittance
roughness
electrical properties
optical properties
electrical resistivity

Keywords

  • Ag
  • multilayer
  • transparent conducting electrode
  • ZnO

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

Highly Transparent and Low-Resistance Indium-Free ZnO/Ag/ZnO Multilayer Electrodes for Organic Photovoltaic Devices. / Kim, Jun Ho; Na, Jin Young; Kim, Sun Kyung; Yoo, Young Zo; Seong, Tae Yeon.

In: Journal of Electronic Materials, Vol. 44, No. 10, 27.05.2015, p. 3967-3972.

Research output: Contribution to journalArticle

Kim, Jun Ho ; Na, Jin Young ; Kim, Sun Kyung ; Yoo, Young Zo ; Seong, Tae Yeon. / Highly Transparent and Low-Resistance Indium-Free ZnO/Ag/ZnO Multilayer Electrodes for Organic Photovoltaic Devices. In: Journal of Electronic Materials. 2015 ; Vol. 44, No. 10. pp. 3967-3972.
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