2022 Adv. Mater. (IF 30.849), Highest Efficiency of Large-area Organic Solar Modules! A New Way to Develop High-performance Solar Modules
Top-Notch Due to It’s Precision!
In the development of organic solar cells, although there have been encouraging progress in spin-coated prototype cells, there are still great challenges in large-area modules. Among them, one of the biggest challenges is the need to scale up the multi-stacked photoactive layers.
Advanced Materials published a study in May 2022. The research team used a bilayer-merged-annealing (BMA) assisted blade coating strategy to develop high-performance opaque and translucent organic solar cell modules. Through experiments with instruments such as the QE-R quantum efficiency measurement system of Enlitech, the researchers achieved impressive efficiencies of 14.79% and 12.01% on a solar module with an effective area of 18.73 cm2 . This experimental result is also the highest efficiency of an organic solar minimodules so far.
The BMA strategy effectively addressed the de-wetting problem between the polar charge transport layer solution and the non-polar bulk heterojunction mixture. In addition, the BMA strategy also improved the thin film coverage as well as the electronic and electrical contacts of the multilayer photoactive layer. The research results also demonstrated that the organic solar module using the BMA-assisted blade coating strategy successfully maintained high efficiency even after the small-area cell was enlarged upon 312 times . This study provides a facile and effective method for fabricating high-performance organic solar modules.
In addition to EQE (External Quantum Efficiency) spectral analysis of solar cells, the QE-R Quantum Efficiency Measurement System of Enlitech also provides Jsc (short-circuit current density) comparison for the short-circuit current of solar cells under a solar simulator to prove the authenticity of the experiment.
Measured under a solar simulator, the result showed J-V characterization of organic solar cells produced by blade coating strategy with different (a) active layer thickness, (b) addition amount, and (c) donor and acceptor.