Inverted Polymer Solar Cells Based on New Organic Electrolyte Doped ZnO as an Electron Transport Layer
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초록
내용
Polymer solar cells (PSCs) have been known as an attractive candidate for clean energies, with the low cost fabrication, lightweight, and mechanical flexibility. In this presentation, to increase the power conversion efficiency (PCE) of inverted PSCs, new small molecular electrolyte (C6-E-OTs) was prepared and doped into zinc oxide (ZnO) as an electron transport layer (ETL). The material has two hydroxyl groups and quaternary ammonium cation with tosylate anion for generating a favorable interface dipole. Furthermore, the device based on doped ZnO has lower Schottky barrier at the cathode interface than the device based on pristine ZnO. As a result, the PCE of device with doped ZnO was achieved up to 8.27%.