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Stabilizing Perovskites December 3, 2020

Posted by stuffilikenet in Awesome, Science.
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Professor of Chemistry Biwu Ma and his team from Florida State University published a new study that shows if you add a layer of N,N‐bis(tert‐butyloxycarbonyl)‐quinacridone (TBOC‐QA) to a perovskite solar cell, it increases the stability and efficiency of the cell with an efficiency of 18.9% without the layer of pigment to 21.1%.  It also seems to have enhanced the durability of the cell (perovskites do poorly in humidity and air).

Better still, this is a pretty simple process from a manufacturing point of view: spray and heat (“surface passivation by annealing”). “We believe that surface passivation of these cells using low-cost pigments is a very promising approach to improving their stability and efficiency,” Ma said.

Homework: Qingquan He et al. Highly Efficient and Stable Perovskite Solar Cells Enabled by Low‐Cost Industrial Organic Pigment Coating, Angewandte Chemie International Edition (2020). DOI: 10.1002/anie.202012095

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