研究・研究者
研究会・セミナー
| 演 題 | 「Molecular understanding of organic-organic interfaces and mixtures」 |
|---|---|
| 日 時 | 2017年06月29日(木) 16:00 |
| 講演者 | Prof. Denis Andrienko （Department of Polymer Theory, Max Planck Institute for Polymer Research） |
| 場 所 | 分子科学研究所 研究棟2階 201号室 |
| 概 要 |
We show how inclusion of mesoscale order resolves the controversy between experimental and theoretical results for the energy-level profile and alignment in a variety of photovoltaic systems, with direct experimental validation [1,2]. We explain how long-range molecular order and interfacial mixing generate homogeneous electrostatic forces that can drive charge separation and prevent minority carrier trapping across a donor-acceptor interphase [2]. Comparing several of small-molecule donor-fullerene combinations, we illustrate how tuning of molecular orientation and interfacial mixing leads to a trade-off between photovoltaic gap and charge-splitting and detrapping forces, with consequences for the design of efficient photovoltaic devices. By accounting for long-range mesoscale fields, we obtain the ionization energies in both crystalline [3] and mesoscopically amorphous systems with high accuracy [4]. |
| その他 |
対応者：解良聡（光分子科学第三） |
