Effect of in situ annealing on the performance of spray coated polymer solar cells

Zheng, Yifan; Wu, Ruofan; Shi, Wei; Guan, Zhiqiang; Yu, Junsheng

doi:10.1016/j.solmat.2013.01.011

Cited by 57 publications

(29 citation statements)

References 28 publications

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“…22 Furthermore, spray coating process can minimize the effect brought by solvents, for the high volatile rate of atomized droplets can reduce the interaction time between solvent and pentacene. 35 This was also confirmed by fabricating OFET with DNA in MW through spray coating process shown as Fig. S3 and Table S1.…”

supporting

confidence: 53%

High mobility organic field-effect transistor based on water-soluble deoxyribonucleic acid via spray coating

Shi

Han

Huang

et al. 2015

Applied Physics Letters

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High mobility organic field-effect transistors (OFETs) by inserting water-soluble deoxyribonucleic acid (DNA) buffer layer between electrodes and pentacene film through spray coating process were fabricated. Compared with the OFETs incorporated with DNA in the conventional organic solvents of ethanol and methanol: water mixture, the water-soluble DNA based OFET exhibited an over four folds enhancement of field-effect mobility from 0.035 to 0.153 cm2/Vs. By characterizing the surface morphology and the crystalline structure of pentacene active layer through atomic force microscope and X-ray diffraction, it was found that the adoption of water solvent in DNA solution, which played a key role in enhancing the field-effect mobility, was ascribed to both the elimination of the irreversible organic solvent-induced bulk-like phase transition of pentacene film and the diminution of a majority of charge trapping at interfaces in OFETs.

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confidence: 53%

High mobility organic field-effect transistor based on water-soluble deoxyribonucleic acid via spray coating

Shi

Han

Huang

et al. 2015

Applied Physics Letters

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“…Simple spray coating has been used to fabricate organic solar cells (24), organic TFTs (25), and MO electronics (26) using heated substrates. In pioneering work, spray-coated sol-gel ZnO TFTs achieved mobilities of ∼0.1 cm 2 V −1 s −1 for 200°C growth and ∼25 cm 2 V −1 s −1 for 500°C growth (26).…”

Section: Significancementioning

confidence: 99%

Spray-combustion synthesis: Efficient solution route to high-performance oxide transistors

Smith²,

Zhou

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

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181

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Metal-oxide (MO) semiconductors have emerged as enabling materials for next generation thin-film electronics owing to their high carrier mobilities, even in the amorphous state, large-area uniformity, low cost, and optical transparency, which are applicable to flat-panel displays, flexible circuitry, and photovoltaic cells. Impressive progress in solution-processed MO electronics has been achieved using methodologies such as sol gel, deep-UV irradiation, preformed nanostructures, and combustion synthesis. Nevertheless, because of incomplete lattice condensation and film densification, high-quality solution-processed MO films having technologically relevant thicknesses achievable in a single step have yet to be shown. Here, we report a low-temperature, thickness-controlled coating process to create high-performance, solution-processed MO electronics: spray-combustion synthesis (SCS). We also report for the first time, to our knowledge, indium-gallium-zinc-oxide (IGZO) transistors having densification, nanoporosity, electron mobility, trap densities, bias stability, and film transport approaching those of sputtered films and compatible with conventional fabrication (FAB) operations. etal-oxide (MO) semiconductors, especially in amorphous phases, represent an appealing materials family for next generation electronics owing to their high carrier mobilities, good environmental/thermal stability, mechanical flexibility, and excellent optical transparency (1-3). MO films complement organic semiconductors (4, 5), carbon/oxide nanomaterials (6), and flexible silicon (7, 8) for enabling new technologies, such as flexible displays and printed sensors. For fabricating high-performance electronics with acceptable fidelity, conventional processes require capital-intensive physical/chemical vapor deposition techniques. Capitalizing on the solubility of MO precursors in common solvents, solution methods have been used to fabricate semiconducting MO layers for thin-film transistors (TFTs). However, the fabrication process and field-effect mobilities of these TFTs are not competitive with the corresponding vapor-deposited (e.g., sputtered) devices (9), and developing routes to solution-derived MO TFTs with technologically relevant thicknesses and performance comparable to state of the art vapor-deposited devices is a critical milestone for MO electronics evolution.Sol-gel techniques are used extensively for MO film growth, including films for high-performance TFTs (10-13). However, the required sol-gel condensation, densification, and impurity removal steps typically require >400-500°C processing temperatures, which are incompatible with inexpensive glasses and typical flexible plastic substrates (14). Progress toward significantly reducing the processing temperatures of sol gel-derived MO films has afforded excellent TFT mobilities; however, achieving both reproducible high-performance and stable device operation remains an unsolved issue for Ga-containing materials (15). Sol-gel on-a-chip for indium-zinc-oxide (3) and deep-UV ...

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“…Thermal annealing is one of the most widely used post treatments to further increase devices' PCE by controlling the morphology of the active layer [108][109][110][111][112]. Previous research has found that thermal annealing can increase both the crystallinity of P3HT and aggregation of PCBM in a P3HT:PCBM blend [113,114].…”

Section: Thermal Annealingmentioning

confidence: 99%

Towards High Performance Organic Photovoltaic Cells: A Review of Recent Development in Organic Photovoltaics

2014

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Organic photovoltaic cells (OPVs) have been a hot topic for research during the last decade due to their promising application in relieving energy pressure and environmental problems caused by the increasing combustion of fossil fuels. Much effort has been made toward understanding the photovoltaic mechanism, including evolving chemical structural motifs and designing device structures, leading to a remarkable enhancement of the power conversion efficiency of OPVs from 3% to over 15%. In this brief review, the advanced progress and the state-of-the-art performance of OPVs in very recent years are summarized. Based on several of the latest developed approaches to accurately detect the separation of electron-hole pairs in the femtosecond regime, the theoretical interpretation to exploit the comprehensive mechanistic picture of energy harvesting and charge carrier generation are discussed, especially for OPVs with bulk and multiple heterojunctions. Subsequently, the novel structural designs of the device architecture of OPVs embracing external geometry modification and intrinsic structure decoration are presented. Additionally, some approaches to further increase the efficiency of OPVs are described, including thermotics and dynamics modification methods. Finally, this review highlights the challenges and prospects with the aim of providing a better understanding towards highly efficient OPVs.

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Effect of in situ annealing on the performance of spray coated polymer solar cells

Cited by 57 publications

References 28 publications

High mobility organic field-effect transistor based on water-soluble deoxyribonucleic acid via spray coating

High mobility organic field-effect transistor based on water-soluble deoxyribonucleic acid via spray coating

Spray-combustion synthesis: Efficient solution route to high-performance oxide transistors

Towards High Performance Organic Photovoltaic Cells: A Review of Recent Development in Organic Photovoltaics

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