Simplifying perovskite solar cell fabrication for materials testing: how to use unetched substrates with the aid of a three-dimensionally printed cell holder

Author:

Valdez García Joaquín1ORCID,Hadadian Mahboubeh1ORCID,Nizamov Rustem1ORCID,Mäkinen Paavo2ORCID,Lamminen Noora2ORCID,Vivo Paola2ORCID,Miettunen Kati1ORCID

Affiliation:

1. Department of Mechanical and Materials Engineering, Faculty of Technology, University of Turku, Vesilinnantie 5, Turku FI-20500, Finland

2. Hybrd Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P. O. Box 541, Tampere FI 33014, Finland

Abstract

This work demonstrates that unetched substrates can be reliably used in perovskite solar cell (PSC) fabrication. Chemical etching and laser patterning of the bottom electrodes are time- and resource-consuming processes. In particular, when testing novel conductive substrate materials, such as metallic or bio-based substrates, etching or patterning could be entirely unfeasible or could require significant process optimization. Avoiding these steps could accelerate research on PSCs, yet the literature shows no attempts to override these steps. Here, PSCs were fabricated and characterized using three-dimensionally printed holders with spring-loaded pins. We show that devices made on unetched substrates have, on average, a similar performance to those made on etched substrates (16 ± 1% and 16.0 ± 0.7%, respectively). Our study provides a new strategy for fabricating PSCs, particularly when etching and laser patterning are impractical.

Funder

Research Council of Finland

University of Turku

Emil Aaltonen Foundation

Research Council of Finland Flagship Programme

Finnish Cultural Foundation

SUSMAT

Publisher

The Royal Society

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