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Preparation of rGO/ZnO photoanodes and their DSSCs performance Cover

Preparation of rGO/ZnO photoanodes and their DSSCs performance

Materials Science-Poland
Volume 40 (2022): Issue 2 (August 2022)
By: Jiake Li,  Lanxiang Wu,  Wentao Li,  Ying Chen,  Xin Liu,  Hedong Jiang,  Pingchun Guo,  Hua Zhu and  Yanxiang Wang  
Open Access
|Sep 2022

Figures & Tables

Fig. 1

The schematic diagram of GO preparation process. GO, graphene oxide

Fig. 2

Schematic diagram of the rGO/ZnO composite powder preparation process. GO, graphene oxide; rGO, reduced graphene oxide

Fig. 3

Schematic diagram of the rGO/ZnO photoanodes preparation process. GO, graphene oxide; rGO, reduced graphene oxide

Fig. 4

XRD patterns of the samples prepared by the improved Hummers method. GO, graphene oxide

Fig. 5

XRD patterns (A) ZnO prepared by solution combustion method, (B) rGO/ZnO with 1.25% rGO prepared by the chemical reduction method. rGO, reduced graphene oxide

Fig. 6

FT-IR spectra of GO prepared the improved Hummers, and rGO/ZnO with 1.25% rGO prepared by chemical reduction method. GO, graphene oxide; rGO, reduced graphene oxide

Fig. 7

Raman spectra of GO and rGO prepared by the improved Hummers and the chemical reduction methods, respectively. GO, graphene oxide; rGO, reduced graphene oxide

Fig. 8

SEM images of GO prepared by the improved Hummers method: (A) low-magnification and (B) high-magnification. GO, graphene oxide

Fig. 9

TEM images (A) and its SAED of GO (B) prepared by the improved Hummers method. GO, graphene oxide

Fig. 10

(A) SEM images of the as-synthesized ZnO by solution combustion, (B) rGO, (C) the cross section of rGO/ZnO photoanode at low-magnification, and (D) high-magnification. Note: rGO adding content 1.25%. rGO, reduced graphene oxide

Fig. 11

J-V curves of DSSCs assembled by rGO/ZnO as the photoanodes by adding different contents of rGO. DSSCs, dye-sensitized solar cells; rGO, reduced graphene oxide

Fig. 12

EQE curves of D0, D1, D2, D3, D4, and D5. EQE, external quantum efficiency

Fig. 13

Nyquist curves of D0, D1, D2, D3, D4, and D5 under dark conditions

Performance parameters of DSSCs assembled by rGO/ZnO as the photoanodes by adding different contents of rGO

SamplesAdding content/wt.%Voc/VJsc/mA/cm2FF/%PCE/%
D000.6312.7364.705.20
D10.250.6312.7666.825.27
D20.750.6512.8366.945.42
D31.250.6613.1172.716.27
D41.750.6311.7969.925.51
D52.250.6510.8369.605.10
DOI: https://doi.org/10.2478/msp-2022-0019 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
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Language: English
Page range: 170 - 180
Submitted on: Aug 21, 2021
|
Accepted on: Jun 13, 2022
|
Published on: Sep 7, 2022
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
improved Hummers method,
GO,
rGO/ZnO photoanodes,
photoelectric performance
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2022 Jiake Li, Lanxiang Wu, Wentao Li, Ying Chen, Xin Liu, Hedong Jiang, Pingchun Guo, Hua Zhu, Yanxiang Wang, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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