Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 14, Pages 12171-12175Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b02123
Keywords
ultrathin silicon nanomembrane; transfer technology; optical fiber; photodetector; Schottky barrier
Funding
- Natural Science Foundation of China [51322201, U1632115]
- Science and Technology Commission of Shanghai Municipality [14JC1400200]
- National Key Technologies R&D Program of China [2015ZX02102-003]
- Changjiang Young Scholars Programme of China
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Silicon (Si) nanomembranes (NMs) enable conformal covering on complicated, surfaces for novel applications. We adopt classical fibers as flexible/curved substrates and wrap them with freestanding ultrathin Si-NMs with a thickness of similar to 20 nm. Intrinsic defects in single-crystalline Si-NMs provide a flow path for hydrofluoric acid (HF) to release the NM with a consecutive area of similar to 0.25 cm(2). Such Si-NMs with ultralow flexural rigidities are transferred onto a single-mode fiber (SMF) and functionalized into bendable photodetectors, which detects the leaked light when the fiber is bent. Our demonstration exemplifies optoelectronic applications in flexible photodetector for Si-NMs in a three-dimensional (3D) geometry.
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