High Open‐Circuit Voltage Cs₂AgBiBr₆ Carbon‐Based Perovskite Solar Cells via Green Processing of Ultrasonic Spray‐Coated Carbon Electrodes from Waste Tire Sources

Abstract

Costs and toxicity concerns are at the center of a heated debate regarding the implementation of perovskite solar cells (PSCs) into commercial products. The first bottleneck could be overcome by eliminating the top metal electrode (generally gold) and the underlying hole transporting material and substituting both with one single thick layer of conductive carbon, as in the so‐called carbon‐based PSCs (C‐PSCs). The second issue, related to the presence of lead, can be tackled by resorting to other perovskite structures based on less toxic metallic components. An interesting case is that of the double perovskite Cs2AgBiBr6, which at present still lacks the outstanding optoelectronic performances of the lead‐based counterparts but is very stable to environmental factors. In this work, the processing of carbon electrodes onto Cs2AgBiBr6‐based C‐PSCs was reported, starting from an additive‐free isopropanol ink of a carbon material obtained from the hydrothermal recycling of waste tires and employing a high‐throughput ultrasonic spray coating method in normal environmental conditions. Through this highly sustainable approach that ensures a valuable step from an end‐of‐life to an end‐of‐waste status for used tires, devices were obtained delivering a record open circuit voltage of 1.293 V, which might in the future represent ultra‐cheap solutions to power the indoor Internet of Things ecosystem.

Big data driven perovskite solar cell stability analysis

“…The comparison shows that though inorganic HTLs improve device stability, the loss in efficiency (~4% drop in PCE) makes it less competitive, while the energy output capability of carbon-based devices is many times more than that of organic HTL devices. Together with the advantages of printability and simple preparation as previously reported 52 , carbon electrodes can reduce the costs enormously.…”

Stability enhancement and pronounced three-photon absorption in SrCl2-doped FAPbBr3nano crystals

“…[22][23][24] A cumulative study on OIHP devices as a renewable energy source to split water into H 2 and O 2 was done by Pirrone et al 25 A cheaper and large-scale processable technique for stable large-area perovskite SCs (PSCs) using carbon-based materials was demonstrated by Fagiolari et al 26 Considering the toxicity of lead, more recent advances in leadfree PSCs for sustainable and clean energy production have been reviewed in the literature and achieved Cs 2 AgBiBr 6 carbon-based PSCs with a high open-circuit voltage. 27,28 In the past few decades, scientists have been fascinated by the optical nonlinearity of numerous interesting optical materials for their momentous applicability. 29,30 The diverse applicability of novel entities in the nonlinear domain establishes them as potential candidates in significant photonic applications, such as optical switching, optical limiting, optical communications, and biomedical imaging.…”

“…22–24 A cumulative study on OIHP devices as a renewable energy source to split water into H 2 and O 2 was done by Pirrone et al 25 A cheaper and large-scale processable technique for stable large-area perovskite SCs (PSCs) using carbon-based materials was demonstrated by Fagiolari et al 26 Considering the toxicity of lead, more recent advances in lead-free PSCs for sustainable and clean energy production have been reviewed in the literature and achieved Cs 2 AgBiBr 6 carbon-based PSCs with a high open-circuit voltage. 27,28…”

Compensating Cutting Losses by Passivation Solution for Industry Upgradation of TOPCon and SHJ Solar Cells

“…Photovoltaic (PV) technologies are the most promising for clean and renewable energy sources. Recently, crystalline silicon solar cells, [1] perovskite solar cells, [2][3][4][5][6] dyesensitized solar cells, [7][8][9][10] and organic solar cells [11][12][13][14] have made fruitful progress. Crystalline silicon cells (c-Si) are currently the dominating technology with over 95% market share.…”