Employment of gold-coated silver nanowires as transparent conductive electrode for organic light emitting diodes

• DOI: 10.1088/1361-6528/aa7ba0
• Publication Date: 2017-06-26T10:15:36Z
• Authors: Sunho Kim; Bongsung Kim; Inseob Im; Dongjae Kim; Haeseong Lee; Jaewook Nam; Ho Kyoon Chung; Hoo-Jeong Lee; Sung Min Cho
• Keywords: 02 engineering and technology; 0210 nano-technology

This study proposes a simple method of Au coating on silver nanowires (Ag NWs) transparent conductive films as the anode organic light emitting diodes (OLED) to increase work function film and thus enhance hole transport. We carefully engineer process conditions (pretreatment, solution concentrations, number) using diluted HAuCl4 Ag NWs minimize etching damage accompanying galvanic replacement reaction. Ultraviolet photoelectron spectroscopy Kelvin probe force microscopy show upon coating. OLED devices based Au-coated lower turn-on voltage higher luminance, compared with pristine device. Although device displays poor efficiencies in low luminance range due high leakage, some showed than those ITO luminance.