Morphological studies of small-molecule solar cells: nanostructural engineering via solvent vapor annealing treatments

被引：4

作者：

Kim, Yu Jin ^{[1
,4
]}

An, Tae Kyu ^{[2
,3
]}

Park, Chan Eon ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Dept Chem Engn, POSTECH Organ Elect Lab, Pohang 790784, South Korea

[2] Korea Natl Univ Transportat, Dept Polymer Sci & Engn, 50 Daehak Ro, Chungju, South Korea

[3] Korea Natl Univ Transportat, Dept IT Convergence, 50 Daehak Ro, Chungju, South Korea

[4] Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Lemont, IL 60439 USA

来源：

JOURNAL OF MATERIALS SCIENCE | 2017年 / 52卷 / 22期

基金：

新加坡国家研究基金会;

关键词：

ORGANIC PHOTOVOLTAICS; EFFICIENCY; ORIENTATION; CRYSTALLINITY; DYNAMICS;

D O I：

10.1007/s10853-017-1407-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fine-tuning nano/micro-structural morphologies and their depth studies in small-molecule solar cells are key parameters in elevating device performances. In the current work, we focused on controlling the morphology of a small-molecule organic photovoltaic by treating its active layer film with solvent vapor annealing (SVA). For this project, the devices were made of all-small-molecule p-DTS(FBTTh2)(2):PC71BM heterojunction films processed using different solvents for the vapor annealing. The different solvents resulted in different nano-domain packing structures and segregated phase separation as evidenced by detailed two-dimensional grazing-incidence wide-angle X-ray scattering (2D-GIWAXS) and atomic force microscopy (AFM) analyses. From the data, we demonstrated a correlation between the nanostructural morphology of the active layer film and the performance of the device and found an SVA condition that produced a p-DTS(FBTTh2)(2):PC71BM blend system yielding an improved device performance.

引用

页码：13173 / 13182

页数：10

共 38 条

[31] The Role of Additive in Diketopyrrolopyrrole-Based Small Molecular Bulk Heterojunction Solar Cells [J].