DataVXACS Applied Nano MaterialsPaper
journal article·2024-02-23

Lead Halide Ligand Recycling Enables Low-Cost Infrared PbS Quantum Dot Solar Cells

Gomaa Mohamed Gomaa Khalaf, Xinzhao Zhao, Mingyu Li, Salman Ali, An Ke, Hsien-Yi Hsu, Haisheng Song

ACS Applied Nano Materials· Volume 7· Issue 4
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Source abstract

Abstract

Large-scale fabrication of PbS quantum dot (PbS QD) solar cells is hindered by the prohibitive cost of the chemicals. Most of these substances and chemicals are employed in the ligand exchange step, more specifically, in lead halide-based ligands. In this study, we investigate ligand recycling. Lead halide ligands are normally employed in PbS solar cells via a solution phase transfer exchange method. The chemical analysis, such as X-ray photoelectron spectroscopy (XPS), demonstrates that both the recycled and fresh lead halide ligands are similar. By employing this recycled ligand in solar cell fabrication, power conversion efficiencies (PCEs) of 10.36 and 10.05% were achieved by using the first and second cycles of the lead halide ligand. After four rounds of ligand recycling, the large-size nanomaterial (1300 nm excitonic peak) solar cells still achieved a PCE of around 9%. The above reclaimable ligand approach can also be extended to small nanomaterials (an exciton peak at around 940 nm). It could obtain a PCE of 10.13 and 9.70% based on the fresh and recycled ligands, respectively. The present recycling ligand work builds a revolutionary strategy for PbS QD optoelectronic devices to decrease costs, production times, and environmental effects through recycling.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsElectronic materials

OpenAlex topics: Quantum Dots Synthesis And Properties · Chalcogenide Semiconductor Thin Films · TiO2 Photocatalysis and Solar Cells

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei 430074, P. R. China

Solar and Space Department, National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo 11421, Egypt

School of Energy and Environment &Department of Materials Science and Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong 999077, People’s Republic of China

Optics Valley Laboratory, 1037 Luoyu Road, Wuhan, Hubei 430074, P. R. China

Wenzhou Advanced Manufacturing Technology Research Institute of Huazhong University of Science and Technology, Wenzhou, Zhejiang 325035, People’s Republic of China

Funding

Science and Technology Plan Project of Wenzhou Municipality · Science, Technology and Innovation Commission of Shenzhen Municipality · Innovation and Technology Commission · City University of Hong Kong · National Natural Science Foundation of China · Interdisciplinary Research promotion of HUST · Innovation Project of Optics Valley Laboratory

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