DataVXACS Energy LettersPaper
journal article·2022-05-13

Polyacrylic Acid Grafted Carbon Nanotubes for Immobilization of Lead(II) in Perovskite Solar Cell

Jinpei Wang, Renyan Zhang, Hui Xu, Yonghua Chen, Hui Zhang, Nam-Gyu Park

ACS Energy Letters· Volume 7· Issue 5
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Source abstract

Abstract

In this report, we propose a concept of lead immobilization to suppress the lead exposure risk by employing poly(acrylic acid) grafted carbon nanotubes (CNT-PAA) as dopants in the preparation of perovskite thin films. Due to the presence of a large amount of carboxyl groups and the self-bundling of water insoluble CNTs, the CNT-PAA exhibited a high Pb2+-immobilization capability, allowing them to retain the lead components on the substrates and reduce lead(II) leaching below the hazardous waste limit once occasionally exposed to water. Moreover, the PAA chains on the CNTs surface can strongly chelate with Pb2+ to accelerate crystal nucleation in precursor solution and to passivate undercoordinated defects in the as-achieved thin films, and the inserted CNTs within the perovskite grains can regulate the perovskite growth with vertical orientation and boost both electron and hole mobility, resulting in eliminated nonradiative recombination and facilitated charge transport across the perovskite layer.
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Research context

NanomaterialsElectronic materials

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Advanced battery technologies research

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

Affiliations

Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University, Nanjing 211816, Jiangsu, China

Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China

School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Korea

SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University, Suwon 16419, Korea

Funding

Ministry of Science and Technology of the People's Republic of China · National Research Foundation of Korea · Six Talent Peaks Project in Jiangsu Province · National Natural Science Foundation of China · State Key Laboratory of Organic Electronics and Information Displays · Young Scientist Exchange Program between The Republic of Korea and the People?s Republic of China

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