Photogeneration in Organic Solar Cells (Photogen)

有机太阳能电池中的光发生（上镜）

• 批准号: 362992821
• 负责人: Professor Dr. Carsten Deibel
• 金额: --
• 依托单位: Institute for Materials Research IMO
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/362992821?language=en
• 关键词: Photogeneration; Organic; Solar; Cells; Photogen

Even though organic solar cells based on electron donor and electron acceptor materials have reached power conversion efficiencies over 13 %, the detailed fundamental working principles of these devices are not understood. In contrast to inorganic materials, efficient free carrier generation upon light absorption in organic materials is initiated by a charge transfer event at a donor-acceptor interface, resulting in a certain amount of energy losses. A further increase in power conversion efficiency through rational design of new materials can only occur with the knowledge of the factors which allow to minimize this energy loss, while maintaining a high and field independent free charge carrier generation yield. In this project, we will therefore utilize and further develop experimental techniques to measure the interfacial electronic structure and photo-generation yield with associated energy loss. This project will result in design rules for new molecules, donor--acceptor combinations and nano-morphologies for less internal energy losses, higher operating voltages and thus more efficient organic solar cells.

尽管基于电子供体和电子受体材料的有机太阳能电池的功率转换效率已经达到13%以上，但这些设备的详细基本工作原理尚不清楚。与无机材料相比，在有机材料中，光吸收后有效的自由载流子产生是由供体-受体界面上的电荷转移事件引发的，导致一定的能量损失。通过合理设计新材料来进一步提高功率转换效率，只有在了解了使能量损失最小化的因素的情况下，才能实现，同时保持高的、与场无关的自由电荷载流子产率。因此，在本项目中，我们将利用并进一步发展实验技术来测量界面电子结构和光产率以及相关的能量损失。该项目将为新分子、供体-受体组合和纳米形态设计规则，以减少内部能量损失，提高工作电压，从而提高有机太阳能电池的效率。

项目成果

Temperature dependence of the spectral line-width of charge-transfer state emission in organic solar cells; staticvs.dynamic disorder

• DOI: 10.1039/d0mh00385a
• 发表时间: 2020-07
• 期刊: Materials horizons
• 影响因子: 13.3
• 作者: Kristofer Tvingstedt;J. Benduhn;K. Vandewal

Band gap engineering in blended organic semiconductor films based on dielectric interactions

• DOI: 10.1038/s41563-021-01025-z
• 发表时间: 2021-06-10
• 期刊: NATURE MATERIALS
• 影响因子: 41.2
• 作者: Ortstein, Katrin;Hutsch, Sebastian;Leo, Karl
• 通讯作者: Leo, Karl

Stacked Dual‐Wavelength Near‐Infrared Organic Photodetectors

• DOI: 10.1002/adom.202001784
• 发表时间: 2020-12
• 期刊: Advanced Optical Materials
• 影响因子: 9
• 作者: Yazhong Wang;Bernhard Siegmund;Zheng Tang;Zaifei Ma;Jonas Kublitski;Shen Xing;Vasileios C. Nikolis;Sascha Ullbrich;Yungui Li;J. Benduhn;D. Spoltore;K. Vandewal;K. Leo

Temperature-Dependent Charge-Transfer-State Absorption and Emission Reveal the Dominant Role of Dynamic Disorder in Organic Solar Cells

• DOI: 10.1103/physrevapplied.15.064009
• 发表时间: 2021-06-03
• 期刊: PHYSICAL REVIEW APPLIED
• 影响因子: 4.6
• 作者: Goehler, Clemens;Saladina, Maria;Deibel, Carsten
• 通讯作者: Deibel, Carsten