Full Life-Cycle Lead Management and Recycling Transparent Conductors for Low-Cost Perovskite Solar Cell

Abstract

Realizing a full life-cycle management for toxic lead (Pb) and reducing material/manufacture cost are the key steps in determining the commercialization process of perovskite photovoltaics. In this work, we develop full lifecycle material management for a carbon-based perovskite solar cell (C-PSC) to immobilize and recover Pb against environmental pollution, followed by refabrication of C-PSC based on recovered materials and recycled transparent conductors from obsolete devices. Pb immobilization is first achieved by a strong coordination interaction between undercoordinated Pb ions from perovskite and a C�O bond from green pseudohalide ions (pseudo-X), and the resulting C-PSC with the structure of ITO/SnO 2 /pseudo-Xperovskite/carbon yields an efficiency of 16.63%. Pb from an endof-life C-PSC is then recovered by dissolving the obsolete perovskite layer into DMF/DMSO precursor solvent, followed by replenishing a certain amount of MAI to guarantee new perovskite layer formation. The refabricated C-PSC based on recovered perovskite and a recycled transparent conductor displays comparable efficiency (15.30%) to that of C-PSC with commercial raw materials, also exceeding the previous efficiency record for C-PSCs based on recycled materials. Such refabricated C-PSC is relatively low-cost.

Highly Efficient (>13%) and Robust Flexible Perovskite Solar Cells Using an Ultrasimple All-Carbon-Electrode Configuration

“…Accordingly, the grain boundaries of the former perovskite film are reduced, which could lead to low trap density and inhibit charge nonradiative recombination, thereby enhancing the photovoltaic performance of PSCs. 39,40 From the XRD patterns of the perovskite films (Figure 4b), we observed three high-intensity diffraction peaks at 14.5°(110), 28.6°( 220), and 32.4°(310) which correspond to those for typical α-phase perovskite. 41 No diffraction peak was observed at 12.7°for PbI 2 in the perovskite film deposited on the CNT-1000-GR/SnO 2 substrate, which indicates the formation of the high-quality perovskite film.…”

In Situ Gelation of a 1,3-Dioxolane Dual-Permeable Porous Tandem Framework with Excellent Interfacial Stability to Power Long-Cycling Solid-State Lithium Metal Batteries

“…From the charge–discharge curves of the LFP/CPET2/Li battery (Figure e), one can observe that the polarization voltage rises slowly and the discharge specific capacity has a slight decrease with the rise of the cycle number. The battery impedance changes before and after the cycle can also be utilized to evaluate the cycling stability of SSLMBs. − The interfacial impedance of the LFP/CPET2/Li battery increases to 504.9 from 202.3 Ω at 0.5C after 250 cycles with a mean increase of only 1.2 Ω per cycle (Figure S13a). As for the LFP/CPE2/Li battery, its interfacial impedance increases to 553.7 from 314.1 Ω after 90 cycles with a mean increase of 2.7 Ω per cycle (Figure S13b).…”

Flexible, photoluminescent 0D Cs4PbX6 (X = Br, Br/I)–PMMA composite films for white LED via water-induced recrystallization

“…In recent years, inorganic halide perovskites have shown great potential as a new type of optoelectronic material in solar cells [ 1 ], photocatalysis [ 2 ], and optoelectronic devices [ 3 – 7 ] due to their excellent optical properties and low cost. Although its high color purity, high carrier mobility, and long carrier diffusion length [ 8 – 10 ] are very attractive, its crystal structure is easily degraded from cubic to the orthorhombic structure at room temperature [ 11 ], and the lack of stability in water [ 12 ], oxygen [ 13 ], and elevated temperature [ 14 ] hinder its practical usefulness.…”