Reducing Losses in Perovskite Large Area Solar Technology: Laser Design Optimization for Highly Efficient Modules and Minipanels

Abstract

The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/aenm.202103420.

Scalable processing for realizing 21.7%-efficient all-perovskite tandem solar modules

“…3C and table S3). We expect that laser scribing ( 35 , 36 ), instead of mechanical scribing, for P2 and P3 processings could allow for an even higher GFF and thus higher module efficiency, given that the subcell widths of tandems that are used herein are much larger than those reported in single-junction perovskite solar modules (table S4).…”

Nonplanar Spray-Coated Perovskite Solar Cells

“…We also expect further enhancements in device efficiency through the use of surfactants to improve surface coverage of the perovskite layer and through optimization of the processes used to spray cast the charge transport layers. , We note that spray coating can be used to rapidly coat large areas at high speed, potentially allowing PSCs to be fabricated over relatively large-area substrates . We expect the combination of spray coating with device modularization techniques (e.g., via laser patterning) to allow spray-coated modules to be fabricated over very large areas. Such an approach should be capable of generating mobile power with a higher degree of specific power (power to weight) compared to current generations of laminated solar cell technologies …”

Recent developments in perovskite-based precursor inks for scalable architectures of perovskite solar cell technology

“…162,173,201,204 This is understandable, since the post-processing methods such as selective laser scribing, followed by large-area coatings of active layers including the perovskite-based light absorbing layer by these schemes have been proposed to facilitate the production of established serially connected modules. [205][206][207] In contrast, other potential scalable methods such as dropon-demand inkjet printing 136,[208][209][210] have yet to be proven as a reliable process step for large perovskite layer deposition in order to overcome advanced key challenges related to creating exibility in pattern designs of any choice through high precision and resolution. 15,17,211 These challenges call for the development of room temperature-based chemically stable precursor inks that can pass through without clotting the micronozzles of the inkjet cartridges, in order to deliver precise microlitre-sized drop volumes over the desired surfaces.…”

“…162,173,201,204 This is understandable, since the post-processing methods such as selective laser scribing, followed by large-area coatings of active layers including the perovskite-based light absorbing layer by these schemes have been proposed to facilitate the production of established serially connected modules. 205–207…”