Preparation of Reduced Graphene Oxide:ZnO Hybrid Cathode Interlayer Using In Situ Thermal Reduction/Annealing for Interconnecting Nanostructure and Its Effect on Organic Solar Cell

Zheng, Ding; Huang, Wei; Fan, Ping; Zheng, Yifan; Huang, Jiang; Yu, Junsheng

doi:10.1021/acsami.6b15411

Cited by 45 publications

(24 citation statements)

References 70 publications

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“…This is because the surface is very rough while AFM measurement is usually employed to study relatively smooth materials. [39][40][41] When the mixed solvent was used in the fabrication of perovskite, the grains became larger and connected. The RMS decreases to 53nm compared to that based on pure CB washing process.…”

Section: Resultsmentioning

confidence: 99%

Stitching triple cation perovskite by a mixed anti-solvent process for high performance perovskite solar cells

et al. 2017

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With the rapid development of organic-inorganic lead halide perovskite photovoltaics, increasingly more attentions are paid to explore the growth mechanism and precisely control the quality of perovskite films. In this study, we propose a "stitching effect" to fabricate high quality perovskite films by using chlorobenzene (CB) as an anti-solvent and isopropyl alcohol (IPA) as an additive into this anti-solvent. Because of the existence of IPA, CB can be efficiently released from the gaps of perovskite precursors and the perovskite film formation can be slightly modified in a controlled manner. More homogeneous surface morphology and larger grain size of perovskite films were achieved via this process. The reduced grain boundaries ensure low surface defect density and good carrier transport in the perovskite layer. Meanwhile, we also performed the Fourier transform infrared (FTIR) spectroscopy to investigate the film growth mechanism of unannealed and annealed perovskite films. Solar cells fabricated by using the "stitching effect" exhibited a best efficiency of 19.2%. Our results show that solvent and solvent additives dramatically influenced the formation and crystallization processes for perovskite materials due to their different coordination and extraction capabilities. This method presents a new path towards controlling the growth and morphology of perovskite films.

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Section: Resultsmentioning

confidence: 99%

Stitching triple cation perovskite by a mixed anti-solvent process for high performance perovskite solar cells

et al. 2017

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“…[18] Over the past years, there are a lot of work focusing on the fabrication and characterization of ETLs with pristine ZnO, [19] doped-ZnO, [20] and ZnO-based composites [21] and the surface modification of ZnO-based ETLs. [22][23] Generally, there are two main preparation methods to prepare ZnO. One is the sol-gel method, which post heat treatment process is adopted to convert the spin-coated gel film into crystalline ZnO.…”

Section: Introductionmentioning

confidence: 99%

Effect of Crystallinity Modulation between Electron Transport Layer and Photo‐Generation Materials on ZnO‐Based Polymer Solar Cells

et al. 2018

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As one of the most widely used electron transport layers (ETLs) for inverted polymer solar cells (PSCs), ZnO has great effect on the growth of photo‐generated layer. In this work, the ZnO‐based PSCs with the compositional blend of PffBT4T‐2OD: PCBM and PTB7‐Th: PCBM are fabricated to investigate the crystallinity modulation effect (CME) between electron transport layer and photo‐generation materials. The results showed that both the high crystallinity PffBT4T‐2OD: PCBM processed on the large nanoparticles ZnO and the low crystallinity PTB7‐Th: PCBM processed on small nanoparticles ZnO exhibit excellent photovoltaic performances. By verifying the combination of ZnO nanoparticles with photo‐generation materials, it proves that the CME can result in a smooth photo‐generated layer surface to ensure efficient electron transport as well as collection with suppressed bimolecular recombination, leading to the increase of photocurrent and the improvement of inverted PSCs performance accordingly.

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“…Despite being a less expensive technology, the loss of a large amount of solution makes this technique incompatible with the promising large-scale roll-toroll. 3,7,8,11,14,[45][46][47] Spin coating was used to form the donor G-P3HT in as mentioned the study 48 and the active layers P3HT:PCBM in the studies, 17,36,45,[49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65] P3HT:MIF in the study, 62 P3HS: PCBM in the study, 66 PTB7:PCBM in the study, 67 PTB7: PC 70 BM in the study, 68 PTB7:PC 71 BM and PTB7-Th: PC 71 BM in the study, 69 PBDB-T-SF:IT-4F in the study, 70 PBDB-T:PC 71 BM in the study, 71 PBDB-TSR:PC 71 BM in the study, 72 PBDB-T:ITC in the study, 73 PTB7-Th:PC 71 BM in the study, 74 P3HT:ICBA in the studies, 39,75-77 PTB7: PC 71 BM:P-GO in the study, 78 MEH-PPV:PCBM in the study, 79 ZnPc-TB:PTCBI in the study, 80 PEHBDT-DFDTBSe:PC 71 BM in the study, 75 PBDTTT-C:PCBM in the study, 81 PBDTT-F-TT:diPBI in the study, 82 PBDB-T: FH, PBDB-T:FM, PTB7-Th:NFBDT, and PTB7-Th:NOBDT in the study, 83 PSBTBT:PDI-DTT in the study, 84 PDBT-T1: SdiPBI-S in the study, 85 PBDT-8:PC 71 BM and PTIPSBDT-DFDTQX:PC 71 BM in the study 86…”

Section: Spin Coatingmentioning

confidence: 99%

Overview of printing and coating techniques in the production of organic photovoltaic cells

et al. 2020

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The organic photovoltaic cell (OPV) is composed of multiple layers, and some printing and coating techniques are more suitable than others for a certain type of layer. This paper aims to characterize and compare the most relevant coating and printing techniques that can be used in the manufacture of OPVs. Extensive bibliographic research was carried out on articles published from 1998 to 2020 to identify various aspects OPV, such as the principle of operation, advantages, disadvantages, and which layers can be printed by each technique. The results show that the most used method for the processing of OPVs is spin-coating. In the studies found, rotation was used to coat the active layer, the electron transport layer, and the hole transport layer. The techniques of pad printing, casting, and meniscus are considered useful in the processing of the active layer. Regarding the deposition of the active layer, hole transport layer, electron transport layer, and anode, the rotogravure, crack matrix, spraying, and brushing techniques were satisfactory. Flexography has been used to form the active layer, electron transport layer, and anode. Screen printing, inkjet printing, and knife/blade coating were used in the processing of the active layer, hole transport layer, electron transport layer, anode, and cathode. All the double slot die coating, curtain coating, and slide coating allows simultaneous processing of multiple layers. Techniques compatible with roll-to-roll processing are more likely to be at the center of OPVs in the future, thus making solar photovoltaic technology more competitive.

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Preparation of Reduced Graphene Oxide:ZnO Hybrid Cathode Interlayer Using In Situ Thermal Reduction/Annealing for Interconnecting Nanostructure and Its Effect on Organic Solar Cell

Cited by 45 publications

References 70 publications

Stitching triple cation perovskite by a mixed anti-solvent process for high performance perovskite solar cells

Stitching triple cation perovskite by a mixed anti-solvent process for high performance perovskite solar cells

Effect of Crystallinity Modulation between Electron Transport Layer and Photo‐Generation Materials on ZnO‐Based Polymer Solar Cells

Overview of printing and coating techniques in the production of organic photovoltaic cells

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