The simple, rapid, reproducible, and sensitive detection of trace amounts of molecules is of great interest in terms of early diagnosis of diseases and food safety in daily-life applications. In this study, low-pressure chemical vapor deposited (LP-CVD) graphene(G)-based flexible and transparent AgNPs/CVDG@AryLite™ nanostructured surface enhanced Raman scattering (SERS) substrate has been demonstrated towards the detection of L-Tyrosine (L-Tyr) amino acid molecules. The synthesize of high-quality, single-crystal monolayer graphene films was achieved with considerably low (62.81 Ω sq.⁻¹) sheet resistance and 94% transmittance at 550 nm wavelength. AgNPs are uniformly formed with a size distribution of about 60 nm on the CVDG surface. The fabricated substrates have been investigated by Rhodamine 6G (R6G) as probe molecule and L-Tyr amino acid molecules with different concentrations to understand the SERS properties. Significant enhancement of R6G and L-Tyr on the fabricated AgNPs/CVDG@AryLite™ SERS substrates obtained even if the 10⁻⁸ M R6G and L-Tyr solutions are used. The enhancement factors (EFs) are calculated as 10⁹ and 7.5 × 10⁹ for R6G and L-Tyr, respectively. The results in this research show that the fabricated nanostructured SERS substrates might open up a new path to design flexible and transparent optoelectronic devices towards detection of trace amount of molecules particularly portable spectroscopic instruments.

在日常生活中疾病的早期诊断和食品安全方面，简单，快速，可重现和灵敏的痕量分子检测引起了人们的极大兴趣。在这项研究中，基于低压化学气相沉积（LP-CVD）石墨烯（G）的柔性和透明AgNPs / CVDG @ AryLite™纳米结构表面增强拉曼散射（SERS）基板已被证明可用于检测L-酪氨酸（ L-Tyr）氨基酸分子。以相当低的（62.81Ωsq。^-1）薄层电阻和550 nm波长下94％的透光率。AgNP在CVDG表面上以约60nm的尺寸分布均匀地形成。用罗丹明6G（R6G）作为探针分子和不同浓度的L-Tyr氨基酸分子对制备的底物进行了研究，以了解SERS特性。即使使用10 ^-8 M R6G和L-Tyr溶液，在获得的AgNPs / CVDG @ AryLite™SERS衬底上，R6G和L-Tyr也会显着提高。增强因子（EFs）计算为10 ⁹和7.5×10 ⁹分别用于R6G和L-Tyr。这项研究的结果表明，所制造的纳米结构的SERS衬底可能为设计用于检测痕量分子（尤其是便携式光谱仪器）的灵活而透明的光电设备开辟一条新途径。