Non-halogenated Solvent Processed Spiro-type Hole Transport Material for Efficient Perovskite Solar Cells.
발표자
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초록
내용
Perovskite solar cells (PSCs) are the fastest developing solar cells and pull in a part of attention due to the prevalent advantages such as solution process, flexibility, light weight and low cost. In common, Spiro-OMeTAD is the most using hole transport material (HTM) in PSCs. Thanks to its good merits, such as forming smooth films, increasing molecular stability, high tolerance with dopants, and matching energy levels with perovskite. Therefore, based on structure of Spiro-OMeTAD, Spiro-mF-HE was designed and synthesized by using end group strategy. The thermal, optical, electrochemical properties of the new HTM and device performance were investigated. As a result, Spiro-mF-HE based device showed high power conversion efficiency (PCE) of 23.84% with an open circuit voltage (Voc) of 1.142V, a short-circuit density (Jsc) of 26.29mA/cm2 and a fill factor (FF) of 79.38%. This investigation shows that the newly synthesized Spiro-mF-HE is a potential HTM to achieve good performance in the field of PSCs.