通过增加界面接触来增强有序的无机-有机杂化结构的光响应。

The enhancement of photoresponse of an ordered inorganic-organic hybrid architecture by increasing interfacial contacts.

机构信息

Key Laboratory of the Ministry of Education for Polymer Composite and Functional Materials, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, People's Republic of China.

出版信息

Nanotechnology. 2010 Feb 10;21(6):065304. doi: 10.1088/0957-4484/21/6/065304. Epub 2010 Jan 8.

DOI:10.1088/0957-4484/21/6/065304

PMID:20057029

Abstract

A modified ZnO quantum dot/polythiophene (ZnO/PTh) inorganic-organic hybrid architecture was fabricated by using ordered mesoporous silica (SBA-15) as the retaining template. First, a two-step strategy was developed to synthesize an ordered organic conducting polymer composite (PTh/SBA-15). Then, ZnO quantum dots were in situ formed on the pore walls of the ordered PTh/SBA-15 composite. Photoresponse of the inorganic-organic hybrid was studied with respect to its incident photon to collected electron conversion efficiency (IPCE) and morphology. The presence of SBA-15 proved to be critical for controlling the interfacial morphology and hence enlarging the interfacial area of the inorganic-organic heterojunction. The proposed approach may act as a key method to open up potential applications in photovoltaic devices.

摘要

采用有序介孔硅 SBA-15 作为保留模板，制备了一种修饰的 ZnO 量子点/聚噻吩（ZnO/PTh）无机-有机杂化结构。首先，开发了一种两步策略来合成有序的有机导电聚合物复合材料（PTh/SBA-15）。然后，在有序 PTh/SBA-15 复合材料的孔壁上原位形成 ZnO 量子点。研究了无机-有机杂化的光响应特性，包括其入射光子到收集电子的转换效率（IPCE）和形貌。SBA-15 的存在对于控制界面形态，从而扩大无机-有机异质结的界面面积，具有至关重要的作用。该方法可以作为一种关键方法，为光伏器件的潜在应用开辟道路。