Hood Samantha, Zarrabi Nasim, Meredith Paul, Kassal Ivan, Armin Ardalan
Centre for Engineered Quantum Systems and School of Mathematics and Physics , The University of Queensland , Brisbane , QLD 4072 , Australia.
Department of Physics , Swansea University , Singleton Park , Swansea SA2 8PP , Wales , United Kingdom.
J Phys Chem Lett. 2019 Jul 18;10(14):3863-3870. doi: 10.1021/acs.jpclett.9b01304. Epub 2019 Jun 27.
Quantifying energetic disorder in organic semiconductors continues to attract attention because of its significant impact on the transport physics of these technologically important materials. Here, we show that the energetic disorder of organic semiconductors can be determined from the relationship between the internal quantum efficiency of charge generation and the frequency of the incident light. Our results for a number of materials suggest that energetic disorder in organic semiconductors could be greater than previously reported, and we advance ideas as to why this may be the case.
由于能量无序对这些具有重要技术意义的材料的输运物理有重大影响，因此对有机半导体中的能量无序进行量化一直备受关注。在此，我们表明，有机半导体的能量无序可以根据电荷产生的内量子效率与入射光频率之间的关系来确定。我们对多种材料的研究结果表明，有机半导体中的能量无序可能比之前报道的更大，并且我们提出了关于为何可能如此的观点。
