Liang Lina, Fang Yan
Department of Physics, Capital Normal University, Beijing 100037, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2008 Jan;69(1):113-6. doi: 10.1016/j.saa.2007.03.036. Epub 2007 Mar 30.
pi-A isotherms, transmission electron microscope (TEM), atomic force microscope (AFM) images and photoluminescence spectra of a mixed Langmuir-Blodgett (LB) film of C(60) and stearic acid (SA) deposited on silicon substrate have been measured at room temperature. C(60)/SA nanoparticles aggregated and formed an ordered net-like structure when deposited on silicon substrate. Two PL intense bands centered at 731 and 806nm, respectively, which are rare at room temperature, were obtained. It is supposed that the particular ordered net-like construction of the LB film plays a crucial role in the enhancement of the photoluminescence. The 731nm PL band is related with the aggregation state of the particles and the 806nm PL band is referred as the intrinsic PL spectrum of the C(60).
在室温下测量了沉积在硅衬底上的C(60)与硬脂酸(SA)混合朗缪尔-布洛杰特(LB)膜的π-A等温线、透射电子显微镜(TEM)、原子力显微镜(AFM)图像以及光致发光光谱。C(60)/SA纳米颗粒沉积在硅衬底上时聚集并形成有序的网状结构。获得了分别位于731和806nm处的两个强PL带，这在室温下是罕见的。据推测，LB膜特殊的有序网状结构在光致发光增强中起关键作用。731nm的PL带与颗粒的聚集状态有关，806nm的PL带被认为是C(60)的本征PL光谱。
