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Molecular Weight Effects of Biscarbazole-Based Hole Transport Polymers on the Performance of Solid-State Dye-Sensitized Solar Cells
| Content Provider | MDPI |
|---|---|
| Author | Kong, Minseon Kim, Kyeong Seok Nga, Nguyen Van Lee, Yeonju Jeon, Yu Seong Cho, Yunsung Kwon, Younghwan Han, Yoon Soo |
| Copyright Year | 2020 |
| Description | The leakage and volatilization of liquid electrolytes limit the commercialization of dye-sensitized solar cells (DSCs). As solid-state (ss) hole-transporting materials, free from leakage and volatilization, biscarbazole-based polymers with different molecular weights (PBCzA-H (21,200 g/mol) and PBCzA-L (2450 g/mol)) were applied in combination with additives to produce ssDSCs. An ssDSC with PBCzA-H showed a better short-circuit current (Jsc), open-circuit voltage (Voc), and fill factor (FF) than a device with PBCzA-L, resulting in 38% higher conversion efficiency. Compared to the PBCzA-L, the PBCzA-H with a higher molecular weight showed faster hole mobility and larger conductivity, leading to elevations in Jsc via rapid hole transport, Voc via rapid hole extraction, and FF via lowered series and elevated shunt resistances. Thus, it is believed that PBCzA-H is a useful candidate for replacing liquid electrolytes. |
| Starting Page | 2516 |
| e-ISSN | 20794991 |
| DOI | 10.3390/nano10122516 |
| Journal | Nanomaterials |
| Issue Number | 12 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-12-15 |
| Access Restriction | Open |
| Subject Keyword | Nanomaterials Polymer Science Solid-state Dye-sensitized Solar Cell Biscarbazole Hole-transporting Material Hole Mobility |
| Content Type | Text |
| Resource Type | Article |
