TOWARDS LOW COST PRINTABLE PEROVSKITE SOLAR CELLS

摘要

Since their recent inception [1], the performance of perovskite solar cells have rapidly and significantly improved on small laboratory-scale devices (typically < 0.5 cm~2) to over 20% [2]. Thus, purely based on power conversion efficiency, perovskite devices can readily compete with much more established solar cell technologies. Whilst on the one hand this is very promising for such a burgeoning technology, limiting issues remain. These include the need for a low humidity manufacturing atmosphere to extend the lifetime of the hygroscopic perovskite layers (making ambient processing difficult) and the apparent need for high quality perovskite absorber layers. Typically, these are achieved in the laboratory using a dry box and a spin coater, respectively. However, neither of these processing options are easily scalable. The main research challenges remain as i) their long term stability and ii) its cost-effective up-scaling towards large scale manufacture. The latter could be paraphrased as:- "taking perovskite manufacturing out of the dry box spin coater and into the air."