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Preparation of rGO/ZnO photoanodes and their DSSCs performance

Jiake Li

Jiake Li

School of Materials Science and Engineering, Jingdezhen Ceramic UniversityJingdezhen City, China
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Li, Jiake
, 
Lanxiang Wu

Lanxiang Wu

School of Materials Science and Engineering, Jingdezhen Ceramic UniversityJingdezhen City, China
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Wu, Lanxiang
, 
Wentao Li

Wentao Li

School of Materials Science and Engineering, Jingdezhen Ceramic UniversityJingdezhen City, China
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Li, Wentao
, 
Ying Chen

Ying Chen

School of Materials Science and Engineering, Jingdezhen Ceramic UniversityJingdezhen City, China
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Chen, Ying
, 
Xin Liu

Xin Liu

School of Materials Science and Engineering, Jingdezhen Ceramic UniversityJingdezhen City, China
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Liu, Xin
, 
Hedong Jiang

Hedong Jiang

School of Materials Science and Engineering, Jingdezhen Ceramic UniversityJingdezhen City, China
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Jiang, Hedong
, 
Pingchun Guo

Pingchun Guo

School of Materials Science and Engineering, Jingdezhen Ceramic UniversityJingdezhen City, China
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Guo, Pingchun
, 
Hua Zhu

Hua Zhu

School of Mechanical and Electrical Engineering, Jingdezhen Ceramic UniversityJingdezhen City, China
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Zhu, Hua
 and 
Yanxiang Wang

Yanxiang Wang

School of Materials Science and Engineering, Jingdezhen Ceramic UniversityJingdezhen City, China
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Wang, Yanxiang
  
Sep 07, 2022
Preparation of rGO/ZnO photoanodes and their DSSCs performance's Cover Image
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Published Online: Sep 07, 2022
Page range: 170 - 180
Received: Aug 21, 2021
Accepted: Jun 13, 2022
DOI: https://doi.org/10.2478/msp-2022-0019
Keywords
© 2022 Jiake Li et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1

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

Samples Adding content/wt.% Voc/V Jsc/mA/cm2 FF/% PCE/%
D0 0 0.63 12.73 64.70 5.20
D1 0.25 0.63 12.76 66.82 5.27
D2 0.75 0.65 12.83 66.94 5.42
D3 1.25 0.66 13.11 72.71 6.27
D4 1.75 0.63 11.79 69.92 5.51
D5 2.25 0.65 10.83 69.60 5.10
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Journal Subjects:
Materials Sciences, Materials Sciences, other, Nanomaterials, Functional and Smart Materials, Materials Characterization and Properties
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