Polyaniline-copper/Polycarbonate (PANI-Cu/PC) and polyaniline-copper/Polycarbonate-polyester (PANI-Cu/PC-PBT) nanocomposites (NCPs) were fabricated using chemical oxidative and casting techniques. The morphology of the prepared NCPs was studied using scanning electron microscopy. The optical absorption spectra of these NCP samples have been recorded in the wavelength range 250–850 nm at room temperature. Optical parameters such as Urbach energy (E_u), optical bandgap (E_g), refractive index (n), real (ϵ^′) and imaginary (ϵ^″) parts of complex permittivity have been evaluated. The induced modifications in the optical properties of the UV irradiated NCPs have been studied as a function of UV fluence. The values of optical bandgap of the blank PANI-Cu/PC and PANI-Cu/PC-PBT NCP samples were found to be 3.92 and 3.86 eV, respectively. These values decreased to 3.57 and 3.08 eV upon raising the UV fluence up to 120 J/cm² due the dominance of crosslinking that destroys crystallinity and increases the amorphous phase. This was associated with an increase in Urbach energy, refractive index and dielectric constant. The obvious reduction in the optical bandgap of the UV irradiated PANI-Cu/PC-PBT NCPs makes it of great interest in optoelectronic devices applications.

聚苯胺-铜/聚碳酸酯（PANI-Cu / PC）和聚苯胺-铜/聚碳酸酯-聚酯（PANI-Cu / PC-PBT）纳米复合材料（NCP）是使用化学氧化和浇铸技术制造的。使用扫描电子显微镜研究了制备的NCP的形态。这些NCP样品的光吸收光谱已在室温下记录在250-850 nm的波长范围内。光学参数，例如Urbach能量（E _u），光学带隙（E _g），折射率（n），实数（ϵ ^'）和虚数（ϵ ^））的复介电常数部分已经过评估。已经研究了紫外线辐照的NCP的光学性能中诱导的修饰与紫外线通量的关系。空白PANI-Cu / PC和PANI-Cu / PC-PBT NCP样品的光学带隙值分别为3.92和3.86 eV。由于交联的优势破坏了结晶度并增加了无定形相，因此在将紫外线通量提高至120 J / cm ²时，这些值分别降至3.57和3.08 eV 。这与Urbach能量，折射率和介电常数的增加有关。紫外线辐照的PANI-Cu / PC-PBT NCP的光学带隙明显减小，这使其在光电器件应用中引起了极大的兴趣。