Modified silicone rubber for fabrication and contacting of flexible suspended membranes of n-/p-GaP nanowires with a single-walled carbon nanotube transparent contact

Abstract

+7 9117294724 1. AbstractThis work proposes new chemical and mechanical materials and techniques for III-V semiconductor NW/silicone membrane formation and optoelectronic device fabrication. Molecular beam epitaxy (MBE)-synthesized n-, p-and i-GaP NWs were encapsulated by introduced G-coating method into synthesized polydimethylsiloxane-graft-polystyrene and released from the Si growth substrate. The fabricated membranes were contacted with different materials including single-walled carbon nanotubes or ferrocenyl-containing polymethylhydrosiloxane with and without multi-walled carbon nanotubes doping. The electrical connection of the fabricated membranes was verified by electron beam induced current (EBIC) spectroscopy. The developed methods and materials can be applied for fabrication of high quality flexible inorganic optoelectronic devices. IntroductionThe appealing properties of organic light emitting diodes (OLEDs), i. e. relatively easy and inexpensive fabrication, and efficient electroluminescence (EL) allowed the OLED-based industry to conquer a significant market share. For instance, modern smartphones are mostly produced with the OLED displays [weblink1, weblink2]. However, organic materials are far behind the inorganic materials in terms of stability and external quantum efficiency (EQE) of EL

Structural and Optical Properties of Self-Catalyzed Axially Heterostructured GaPN/GaP Nanowires Embedded into a Flexible Silicone Membrane

“…The NW encapsulation and exfoliation technique employing cap-film for mechanical support was described by Neplokh et.al. in [ 52 , 53 ].…”

Neat Linear Polysiloxane-Based Ionic Polymers: Insights into Structure-Based Property Modifications and Applications

“…The ability to synthesize polysiloxanes by polycondensation reactions [13] between cyclic oligosiloxanes and functionalized dichlorosilanes provides a plethora of materials with different chemical structures and mechanical behaviors that can be tuned for different applications. For example, the commonly employed Karstedt's catalyst [17,18] can be used to convert cyclic oligosiloxanes from liquids at room temperature into flexible plastic and gel-like materials that have been used as platforms for optoelectronics [19,20]. With appropriate polar functional groups, polysiloxanes become somewhat hydrophilic, making them useful as adhesives and sealants [11] despite the parent polymers being highly hydrophobic.…”

Stretchable Transparent Light-Emitting Diodes Based on InGaN/GaN Quantum Well Microwires and Carbon Nanotube Films

“…parts of MWs due to the shadowing effect (Figure 1c). After deposition, metalized MWs were annealed in the ambient atmosphere at 500 °C for 10 min to form an ohmic contact to the p-GaN shell [41].…”

“…Metallization of MW topmost parts was carried out at a 78 • deposition angle in relation to the MW axis that allows avoiding undesirable metal deposition on the lower parts of MWs due to the shadowing effect (Figure 1c). After deposition, metalized MWs were annealed in the ambient atmosphere at 500 • C for 10 min to form an ohmic contact to the p-GaN shell [41].…”

“…Optoelectronic properties of InGaN/GaN MW arrays, including MW/PDMS membrane configuration, were investigated in detail in our previously reported works including [23,24,31,38,49], etc. Flexibility of InGaN/GaN MW/PDMS membrane LEDs and SWCNT films were also thoroughly studied in [23,24,28,41,42], so it is not addressed in the presented work. Therefore, in this section we focus on stretchability-related properties of the fabricated stretchable LEDs.…”