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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 49: Poster Session II

CPP 49.48: Poster

Dienstag, 17. März 2020, 14:00–16:00, P1A

Improvement of hole transport layer selectivity for polymer solar cells — •Aurelien Sokeng Djoumessi^{1, 2}, Jose Prince Madalaimuthu^{1, 2}, Shahidul Alam^{1, 2}, Ulrich S. Schubert^{1, 2}, and Harald Hoppe^{1, 2} — ¹Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich Schiller University Jena, Germany — ²Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Germany

Since the device performance and stability strongly depend on the interfacial layers, the hole transport layer (HTL) is one of the crucial parameters of polymer solar cells. Specifically interesting for charge extraction is the selectivity of the HTL. Furthermore unfavorable interactions with electrodes or the photoactive layer should be screened. We investigated organic solar cells in conventional architecture by varying the HTL systematically between PEDOT:PSS and a sol-gel derived metal oxide. The impact of modified HTL in the solar cells were investigated by different optical and electrical characterizations. In order to observe the effect on the recombination mechanism of the solar cells, light intensity-dependent current-voltage (LID-IV) measurements and analysis of IV-characteristics were performed.