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| Type |
Oral Presentation |
| Area |
Oral Presentation for Young Polymer Scientists |
| Room No. |
Room 325C+D |
| Time |
THU 10:40-: |
| Code |
POLY.O-9 |
| Subject |
Development of Novel Hole-Transporting Materials for Perovskite Solar Cells via Peripheral Group Engineering |
| Authors |
Jaemin Lee
Advanced Materials Division, Korea Research Institute of Chemical Technology, Korea |
| Abstract |
For the commercialization of perovskite solar cells (PSCs), both high efficiency and long-term stability are required. In a typical n-i-p device configuration of PSCs, organic hole-transporting materials (HTMs) are widely used to transport holes into contact metal. Although a variety of new HTMs for PSCs have been developed so far, enhanced stability as well as enhanced efficiency of PSCs using new HTMs has been rarely reported. In this work, a novel spirobifluorene-based HTM, denoted as DM, was synthesized by altering the peripheries of the very famous Spiro-OMeTAD. At the peripheries of DM, dimethylfluorene was introduced instead of anisole. DM-based PSC device showed certified power conversion efficiencies of 22.6% (~ 0.092 cm2) and 20.9% (~ 1 cm2). As a result of energy level matching between perovskite and HTM, a significant reduction in voltage loss of the photovoltaic device could be obtained. Furthermore, the new HTM, DM, showed the higher glass transition temperature (Tg) than Spiro-OMeTAD, which also resulted in the better thermal stability than Spiro-OMeTAD-based device, maintaining almost ~95% of initial performance for more than 500 h after thermal annealing at 60 °C. Details of our strategy to develop high performance HTMs for PSCs will be discussed in the presentation. |
| E-mail |
orange1118@hanmail.net |
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122nd General Meeting of the KCS