Facile preparation of a polymer-ZnO composite colloid as an electron transport layer and its effects on inverted polymer solar cells
| Autor: | Seong Geun Oh, Jin Soo Yoon, Ja Ram Ku, Mo Beom Yi, Lee Won Hee, Jinha Kal |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Materials science Annealing (metallurgy) Energy conversion efficiency Composite number 02 engineering and technology General Chemistry Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Dispersant Polymer solar cell 0104 chemical sciences Colloid Chemical engineering chemistry General Materials Science Work function 0210 nano-technology |
| Zdroj: | Journal of Physics and Chemistry of Solids. 145:109538 |
| ISSN: | 0022-3697 |
| DOI: | 10.1016/j.jpcs.2020.109538 |
| Popis: | A polymer-ZnO colloidal solution was prepared as the organic-inorganic composite electron transport layer of inverted polymer solar cells (i-PSCs) by successive modification of ZnO particles with organic dispersant and polyethyleneimine (PEI), which offers an alternative to previously used complicated processes such as high temperature annealing or multi-layer coatings. The modification of ZnO surfaces with 2-(2-methoxyethoxy) acetic acid (MEA) provides colloidal stability and prevents aggregation of ZnO particles after adding PEI into the ZnO colloidal solution. The amount of incorporated PEI was increased to ~10 wt%, and the cell performance parameters of Jsc and fill factor (FF) were enhanced proportional to PEI content because of its contribution in decreasing the work function of ZnO ETL. By fabrication of i-PSCs with the modified ZnO ETL, the power conversion efficiency (PCE) was increased by ~40% from 5.10% to 7.51% in the ITO/ETL/PV-D4610:PC60BM/MoO3/Ag structure. The multi-functionalized ZnO ETL provides a more facile process for preparation of an organic-inorganic composite ETL to improve the performance of i-PSCs. |
| Databáze: | OpenAIRE |
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