Dresden 2017 – wissenschaftliches Programm
CPP 41.7: Vortrag
Mittwoch, 22. März 2017, 17:00–17:15, ZEU 260
Design and Application of NIR Absorbing Donator Materials for Efficient Organic Solar Cells — •Sebastian Schellhammer1,2,3, Frank Ortmann1,2, and Gianaurelio Cuniberti1,2,3 — 1Institute for Materials Science and Max Bergmann Center of Biomaterials, TU Dresden — 2Dresden Center for Computational Materials Science, TU Dresden — 3Center for Advancing Electronics Dresden, TU Dresden
Recently, fluorene-functionalized aza-BODIPYs have been successfully applied as donor material in organic solar cells. Optimized bulk heterojunction solar cells with C60 have yield power conversion efficiencies up to 4.5 %, rendering the compounds highly competitive among other NIR-absorbing small-molecule donor materials. Based on an analysis of electronic properties, internal reorganization energies, and the optical properties of more than 100 aza-BODIPYs we give guidelines for the design of further optimized materials for solar cell applications. The observed independence of most of the functionalization strategies makes them an ideal material class for tailor-made donor materials that can cover a broad range of absorption, charge transport, and energetic regimes.
 M. Lorenz-Rothe, K. S. Schellhammer et al. Adv. Electron. Mater. 2, 1600152 (2016).