Nanoscale Analysis of a Hierarchical Hybrid Solar Cell in 3D

被引：13

作者：

Divitini, Giorgio ^{[1
]}

Stenzel, Ole ^{[2
]}

Ghadirzadeh, Ali ^{[3
]}

Guarnera, Simone ^{[3
]}

Russo, Valeria ^{[3
,4
,5
]}

Casari, Carlo S. ^{[3
,4
,5
]}

Li Bassi, Andrea ^{[3
,4
,5
]}

Petrozza, Annamaria ^{[3
]}

Di Fonzo, Fabio ^{[3
]}

Schmidt, Volker ^{[2
]}

Ducati, Caterina ^{[1
]}

机构：

[1] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB3 0FS, England

[2] Univ Ulm, Inst Stochast, D-89069 Ulm, Germany

[3] Ist Italiano Tecnol, CNST Ctr Nano Sci & Technol PoliMi, I-20133 Milan, Italy

[4] Politecn Milan, Dept Energy, I-20133 Milan, Italy

[5] Politecn Milan, NEMAS Ctr NanoEngn Mat & Surfaces, I-20133 Milan, Italy

来源：

ADVANCED FUNCTIONAL MATERIALS | 2014年 / 24卷 / 20期

基金：

英国工程与自然科学研究理事会;

关键词：

photovoltaic devices; characterization tools; titanium dioxide; hierarchical nanostructures; hybrid solar cells; POLYMER; MORPHOLOGY; EFFICIENCY; FILMS;

D O I：

10.1002/adfm.201302836

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A quantitative method for the characterization of nanoscale 3D morphology is applied to the investigation of a hybrid solar cell based on a novel hierarchical nanostructured photoanode. A cross section of the solar cell device is prepared by focused ion beam milling in a micropillar geometry, which allows a detailed 3D reconstruction of the titania photoanode by electron tomography. It is found that the hierarchical titania nanostructure facilitates polymer infiltration, thus favoring intermixing of the two semiconducting phases, essential for charge separation. The 3D nanoparticle network is analyzed with tools from stochastic geometry to extract information related to the charge transport in the hierarchical solar cell. In particular, the experimental dataset allows direct visualization of the percolation pathways that contribute to the photocurrent.

引用

页码：3043 / 3050

页数：8

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