| Autor: |
Richard Swartwout, Rahul Patidar, Emma Belliveau, Benjia Dou, David Beynon, Peter Greenwood, Nicole Moody, Dane W. deQuilettes, Moungi Bawendi, Trystan M. Watson, Vladimir Bulovic |
| Rok vydání: |
2021 |
| Popis: |
This manuscript introduces solvent toxicity in solar perovskite ink chemistries as a major technoeconomic limitation for the growth of the technology. More specifically, the capital and operational cost of handling such toxic chemicals to maintain a safe working environment can lead to significant added costs. As all record power conversion efficiency devices to date have been solution processed, this represents a major challenge for the perovskite optoelectronic field and of printed electronics as a whole. Knowing this limitation, we propose that solvent selections for ink chemistries should be more quantitative and focus on lowering toxicity. To this end, we show that a Hansen solubility model is effective in predicting ink systems using lower toxicity solvents. We also show that inks formed from this method are applicable for high-speed slot-die coating, limiting the need for long anneal times. These methods and results demonstrate a useful framework for quantitatively engineering solvent systems with reduced toxicity while simultaneously maintaining and surpassing performance. It therefore provides a pathway and major step forward towards the commercialization of solution coated perovskite technologies. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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