Morphological studies of small-molecule solar cells: nanostructural engineering via solvent vapor annealing treatments
SCIE
SCOPUS
- Title
- Morphological studies of small-molecule solar cells: nanostructural engineering via solvent vapor annealing treatments
- Authors
- Kim, Yu Jin; An, Tae Kyu; Park, Chan Eon
- Date Issued
- 2017-11
- Publisher
- SPRINGER
- Abstract
- 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.
- Keywords
- BULK HETEROJUNCTION; ORGANIC PHOTOVOLTAICS; PERFORMANCE RELATIONSHIPS; EFFICIENCY; ORIENTATION; CRYSTALLINITY; ADDITIVES; DYNAMICS; SIZE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/91995
- DOI
- 10.1007/s10853-017-1407-9
- ISSN
- 0022-2461
- Article Type
- Article
- Citation
- JOURNAL OF MATERIALS SCIENCE, vol. 52, no. 22, page. 13173 - 13182, 2017-11
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