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Nanomaterials 2018, 8(7), 473;

High Performance Ultrathin MoO3/Ag Transparent Electrode and Its Application in Semitransparent Organic Solar Cells

Key Lab of Advanced Transducers and Intelligent Control System of Ministry of Education, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China
Department of Physics and Institute of Advanced Materials, Hong Kong Baptist University, Kowloon 22100, Hong Kong, China
Author to whom correspondence should be addressed.
Received: 10 June 2018 / Revised: 22 June 2018 / Accepted: 24 June 2018 / Published: 27 June 2018
(This article belongs to the Special Issue Optoelectronic Nanodevices)
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In this paper, we demonstrate high performance ultrathin silver (Ag) transparent electrodes with a thin MoO3 nucleation layer based on the thermal evaporation method. The MoO3/Ag transparent electrodes fabricated at different deposition rates were compared systematically on aspects of the transmission spectrum, surface resistance, and surface morphology. Our study indicates that with the presence of the MoO3 nucleation layer, an Ag film of only 7 nm thick can achieve percolation and the film is porous instead of forming isolated islands. In addition, the increase of the deposition rate can yield obvious improvement of the surface morphology of the Ag film. Specifically, with the help of a 1 nm thick MoO3 nucleation layer, the Ag film of 9 nm thick realized under the deposition rate of 0.7 nm/s has a surface resistance of about 20 ohm/sq and an average transmittance in the visible light range reaching 74.22%. Such a high performance of transmittance is superior to the reported results in the literature, which inevitably suffer obvious drop in the long wavelength range. Next, we applied the ultrathin MoO3/Ag transparent electrode in organic solar cells. The optimized semitransparent organic solar cell displays a power conversion efficiency of 2.76% and an average transmittance in the visible range of 38% when light is incident from the Ag electrode side. View Full-Text
Keywords: transparent electrode; Ag film; nucleation layer; organic solar cell transparent electrode; Ag film; nucleation layer; organic solar cell

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Shi, L.; Cui, Y.; Gao, Y.; Wang, W.; Zhang, Y.; Zhu, F.; Hao, Y. High Performance Ultrathin MoO3/Ag Transparent Electrode and Its Application in Semitransparent Organic Solar Cells. Nanomaterials 2018, 8, 473.

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