Journal
ACS APPLIED ENERGY MATERIALS
Volume -, Issue -, Pages -Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.2c01298
Keywords
scalable fabrication; cracked-film lithography; perovskite; solar cells; all-back-contact; quasi-interdigitated; back-contact electrodes
Funding
- U.S. Department of Energy (DOE) [DE-AC36-08GO28308]
- Building Technologies Offices within the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy
- Laboratory-Directed Research and Development Program at the National Renewable Energy Laboratory
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By utilizing cracked film lithography, an interconnected and defect-tolerant back-contact electrode network is formed, optimizing photocurrent and power conversion efficiency.
All-back-contact perovskite solar cells promise greater power conversion efficiency compared to conventional planar device architectures. However, the best-performing devices to date use photolithography to fabricate electrodes, which is expensive for deployment and a barrier for research facilities. Herein, we utilize cracked film lithography, a solution-processed micropatterning technique, to form an interconnected, defect-tolerant back-contact electrode network. We introduce a crack widening technique to control the optical transparency and sheet resistance while decoupling the relative areas of the electron and hole contacts in the back-contact network. Wider cracks increase the area of the hole-selective contact, which increases photocurrent and power conversion efficiency.
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