用电化学方法制备了Cu/AAO纳米有序阵列复合结构,实验研究了该结构的光吸收与光致发光特性。结果表明,植入阳极氧化铝模板中Cu纳米粒子对结构的光吸收和光致发光影响非常敏感。即随着Cu沉积量的增加,致使该复合结构的吸收边大幅度红移,从近紫外至近红外其最大频移量可超过500 nm;同时还伴随使阳极氧化铝模板的光致发光峰位稍有蓝移、强度逐渐削弱直至猝灭的过程。分析了Cu纳米粒子使Cu/AAO复合结构出现上述现象的原因。

Cu/AAO nano-ordered arrays structure are prepared by using electrochemical technique, of which the photo absorption and photoluminescence (PL) properties are studied. The results show that the photo absorption and photoluminescence are very sensitive to the Cu nano-particles migrated into the AAO template, as the deposition of Cu increases, the absorption band shows redshift, and the largest shift from the nearultra violet to the infrared exceeds 500 nm. Meanwhile, the photoluminescence peak presents slight blueshift, of which the intensity falls and quenches gradually. The above phenomena caused by the Cu nano-particles in the Cu/AAO composite are analyzed.