Enhancement of ZnO nanorod arrays-based inverted type hybrid organic solar cell using spin-coated Eosin-Y

Eng Liang Lim, Chi Chin Yap, Muhammad Yahaya, Muhamad Mat Salleh

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

This paper reports the effect of Eosin-Y coating concentration on the performance of inverted type hybrid organic solar cell based on ZnO nanorod arrays and poly(3-hexylthiophene-2,5-diyl) (P3HT). The Eosin-Y solution with concentrations of 0.05, 0.2, 2.0 and 5.0 mM was spin-coated onto the ZnO nanorod arrays grown on the fluorine-doped tin oxide glass substrate. The P3HT film was then spin-coated onto Eosin-Y-coated ZnO nanorod arrays, followed by deposition of silver (Ag) as anode using magnetron sputtering technique. The short circuit current density increased with the Eosin-Y coating concentration up to 0.2 mM, after which it started to decrease, mainly due to the aggregation of Eosin-Y which reduced the charge extraction from P3HT to ZnO. Meanwhile, the open circuit voltage increased with the Eosin-Y coating concentration, indicating reduced back charge recombination of electron on the ZnO and hole on the P3HT, as well as reduced leakage current through the direct contact between the ZnO nanorods and the Ag metal contact. The power conversion efficiency of the device with the optimum coating concentration was approximately eight times higher than that without Eosin-Y modification.

Original languageEnglish
Article number045009
JournalSemiconductor Science and Technology
Volume28
Issue number4
DOIs
Publication statusPublished - Apr 2013

Fingerprint

Eosine Yellowish-(YS)
Nanorods
nanorods
solar cells
Coatings
augmentation
coatings
Open circuit voltage
Tin oxides
Fluorine
Leakage currents
Short circuit currents
Magnetron sputtering
Conversion efficiency
short circuit currents
Anodes
Silver
open circuit voltage
Current density
Agglomeration

ASJC Scopus subject areas

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

Cite this

Enhancement of ZnO nanorod arrays-based inverted type hybrid organic solar cell using spin-coated Eosin-Y. / Lim, Eng Liang; Yap, Chi Chin; Yahaya, Muhammad; Mat Salleh, Muhamad.

In: Semiconductor Science and Technology, Vol. 28, No. 4, 045009, 04.2013.

Research output: Contribution to journalArticle

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