Solution-processible Cd-doped ZnO nanoparticles as an electron transport layer to achieve high performance polymer solar cells through improve conductivity and light transmittance

Jianfeng Li; Meiling Ren; Jicheng Qing; Yufei Wang; Zezhou Liang; Ningning Wang; Junfeng Tong; Chunyan Yang; Yangjun Xia

doi:10.3762/bxiv.2019.82.v1

Solution-processible Cd-doped ZnO nanoparticles as an electron transport layer to achieve high performance polymer solar cells through improve conductivity and light transmittance

Jianfeng Li ,
Meiling Ren ,
Jicheng Qing ,
Yufei Wang ,
Zezhou Liang ,
Ningning Wang ,
Junfeng Tong ,
Chunyan Yang and
Yangjun Xia

Submitting author affiliation:

Lanzhou Jiaotong University, Lanzhou, China

Beilstein Arch. 2019, 201982. https://doi.org/10.3762/bxiv.2019.82.v1

Published 05 Aug 2019

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SUBJECT AREAS

Show All Preprints Nanotechnology Organic chemistry Bioorganic chemistry / chemical biology Catalysis Chemical methods and reactions Flow and process chemistry Green and sustainable chemistry Materials chemistry Medicinal and pharmaceutical chemistry Nano- and molecular-scale electronics Nano-biomaterials and bioscience Nanomagnetics Nanomaterials, thin films and nanointerfaces Nanomedicine Nanometrology and nanomechanics Nano-optics Nanopatterning, self-assembly and nanofabrication Nanostructures for energy and sensing applications Natural products chemistry Organo main group chemistry Other nanotechnology (unclassified) Other organic chemistry (unclassified) Photochemistry and photovoltaics Physical organic chemistry Supramolecular chemistry

Abstract

In this work, electron transport layers (ETLs)with high charge transfer ability was fabricated by doping ZnO nanoparticles with different concentrations of cadmium. The performance for an inverted polymer solar cell based on PTB7-Th: PC₇₁BM with 5% cadmium doping of zinc oxide nanoparticles (CZO) ETL is better than pure ZnO,which can enhance the short-circuit current (J_SC), from 16.30 mA/cm² to 17.15 mA/cm², the fill factor (FF) from 64.45% to 69.38%, power conversion efficiency（PCE）from 8.09% to 9.28%. It's consequence of performance stems from curbing interfacial charge recombination and effective charge extraction. Meanwhile, Taking a series of characterization methods, such as atomic force microscopy (AFM), the space charge limited current (SCLC), transmittance, the charge dissociation probabilities (P(E,T)), photo-electrochemical impedance spectroscopy (EIS). The results indicate that the electrical conductivity and transmittance of the films are improved by incorporation of Cd in the ZnO film, restrained surface charge recombination and enhanced the electron-transport capability. Therefore, the ETL of Cd-doped will be an ideal candidate for future optoelectronic devices.

Keywords: inverted polymer solar cells; ZnO nanoparticles; cadmium doping; transmittance, electrical conductivity

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When a peer-reviewed version of this preprint is available, this information will be updated in the information box above. If no peer-reviewed version is available, please cite this preprint using the following information:

Li, J.; Ren, M.; Qing, J.; Wang, Y.; Liang, Z.; Wang, N.; Tong, J.; Yang, C.; Xia, Y. Beilstein Arch. 2019, 201982. doi:10.3762/bxiv.2019.82.v1

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© 2019 Li et al.; licensee Beilstein-Institut.
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