Affiliation:
1. Institute of Materials for Electronics and Energy Technology (i‐MEET) Friedrich‐Alexander‐Universität Erlangen‐Nürnberg Martensstrasse 7 91058 Erlangen Germany
2. Helmholtz‐Institute Erlangen‐Nürnberg (HI ERN) Immerwahrstraße 2 91058 Erlangen Germany
3. School of Physics Shandong University 27 Shanda Nanlu Jinan 250100 China
4. Institute of Polymer Optoelectronic Materials and Device State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 China
Abstract
AbstractOrganic solar cells (OSCs) now approach power conversion efficiencies of 20%. However, in order to enter mass markets, problems in upscaling and operational lifetime have to be solved, both concerning the connection between processing conditions and active layer morphology. Morphological studies supporting the development of structure–process–property relations are time‐consuming, complex, and expensive to undergo and for which statistics, needed to assess significance, are difficult to be collected. This work demonstrates that causal relationships between processing conditions, morphology, and stability can be obtained in a high‐throughput method by combining low‐cost automated experiments with data‐driven analysis methods. An automatic spectral modeling feeds parametrized absorption data into a feature selection technique that is combined with Gaussian process regression to quantify deterministic relationships linking morphological features and processing conditions with device functionality. The effect of the active layer thickness and the morphological order is further modeled by drift–diffusion simulations and returns valuable insight into the underlying mechanisms for improving device stability by tuning the microstructure morphology with versatile approaches. Predicting microstructural features as a function of processing parameters is decisive know‐how for the large‐scale production of OSCs.
Funder
China Scholarship Council
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Cited by
10 articles.
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