The effects of Ta<sub>2</sub>O<sub>5</sub>–ZnO films as cathodic buffer layers in inverted polymer solar cells

Lan, Jo-Lin; Cherng, Sheng‐Jye; Yang, Yo-Lun; Zhang, Qifeng; Subramaniyan, Selvam; Ohuchi, Fumio S.; Jenekhe, Samson A.

doi:10.1039/c4ta01350f

Cited by 34 publications

(14 citation statements)

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“…It is also observed that the O iii and O ii peaks are negatively shied when the sputter-etching increases, which is mostly due to the electronic interaction between the out-diffused Al atoms and PMMA polymer. 60 The variation of O 1s bonding states as function of sputter-etching times are in good agreement with the existence of rich AlO x layer and V O in the interfacial regime (Fig. 6b).…”

Section: Filament Growth Processes In Pmma-based Devicessupporting

confidence: 78%

Configurable switching behavior in polymer-based resistive memories by adopting unique electrode/electrolyte arrangement

et al. 2021

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Section: Filament Growth Processes In Pmma-based Devicessupporting

confidence: 78%

Configurable switching behavior in polymer-based resistive memories by adopting unique electrode/electrolyte arrangement

et al. 2021

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“…Residing at the D-A interface, the charge-transfer (CT) state mediates the charge carrier separation and the free charge carrier recombination, and its properties directly affect the device performance, especially the open-circuit voltage (V OC ) 15 – 17 . Furthermore, degradation paths are rather complex and differ between standard and inverted stack architectures 18 – 21 . For example, Krebs et al .…”

Section: Introductionmentioning

confidence: 99%

Degradation pathways in standard and inverted DBP-C70 based organic solar cells

Sherafatipour

Benduhn

Patil

et al. 2019

Sci Rep

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Achieving long-term stability in organic solar cells is a remaining bottleneck for the commercialization of this otherwise highly appealing technology. In this work, we study the performance and stability differences in standard and inverted DBP/C70 based organic solar cells. Differences in the charge-transfer state properties of inverted and standard configuration DBP/C70 solar cells are revealed by sensitive external quantum efficiency measurements, leading to differences in the open-circuit voltages of the devices. The degradation of standard and inverted solar cell configurations at ISOS aging test conditions (ISOS-D-3 and ISOS-T-3) was investigated and compared. The results indicate that the performance drop in the small molecule bilayer solar cells is less related to changes at the D-A interface, suggesting also a pronounced morphological stability, and instead, in the case of inverted cells, dominated by degradation at the electron transport layer (ETL) bathocuproine (BCP). Photoluminescence measurements, electron-only-device characteristics, and stability measurements show improved exciton blocking, electron transport properties and a higher stability for BCP/Ag ETL stacks, giving rise to inverted devices with enhanced performance and device stability.

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“…Tantalum silicate glass with high refractive index is expected to offer an exciting new opportunity for enhancing the characteristics of optical components, with more possibilities than many other multi‐component host glass candidates with active luminescent ions . The presence of tantalum ions in silicate glasses also modifies their physical properties to a large extent, including their thermal properties, chemical stability, dielectric constant, and luminescence intensity, which widens the range of the applications such as arrayed‐waveguide grating, dynamic random access memory (DRAM) devices, antireflection coating layers, gas sensors, photocatalysts, solar cells, and optical fibers . Inspired by the superior properties of tantalum‐doped glasses, a few reports have been dedicated to studying the structure of bulk glass based on infrared and Raman spectroscopy.…”

Section: Introductionmentioning

confidence: 99%

Quantitative prediction of the structure and properties of Li₂O–Ta₂O₅–SiO₂ glasses via phase diagram approach

et al. 2018

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Tantalum silicate glasses serve as laser host materials to take advantage of their high refractive index and the ability to tailor their physical properties in the design of high-performance photonic and photoelectric components. However, successful attainment of feature control in tantalum-doped materials remains a longstanding problem due to the limited understanding of local structure around the tantalum ions, a problem that lies at the heart of predicting the micro-and macroscopic properties of these glasses. Herein, we present a novel approach for predicting the local structural environments in tantalum silicate glass based on a phase diagram approach. The phase relations and glass formation region of Li 2 O-Ta 2 O 5 -SiO 2 ternary systems are explored to calculate the structure and additive physical properties of lithium tantalum silicate glasses. These measured and calculated results are in good quantitative agreement, indicating that the phase diagram approach can be applied broadly to Li 2 O-Ta 2 O 5 -SiO 2 ternary glass systems. Using the phase diagram approach, the local structure of tantalum can be directly obtained. Each Ta atom is surrounded by six atoms, and its polyhedron, the TaO 6 octahedron, bonds through oxygen to Li and Ta. As a network modifier, Ta 5+ depolymerizes the silicate glass structure by modulating the local structure of lithium atoms in Li 2 O-Ta 2 O 5 -SiO 2 ternary glass system. The compositional dependence of structure in lithium tantalum silicate glasses is quantitatively determined based on the structure of the nearest neighbor congruent compound through the lever rule. These findings offer a precise prediction of tantalum silicate glass properties with quantitative control over local structural environment of the disordered materials. K E Y W O R D SGlass, properties, silicates, Structure

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The effects of Ta₂O₅–ZnO films as cathodic buffer layers in inverted polymer solar cells

Abstract: Ta2O5–ZnO composite films with varied composition were fabricated by sol–gel processing and applied as cathodic buffer layers (CBLs) for inverted polymer solar cells, and demonstrated enhanced power conversion efficiency with excellent stability.

Cited by 34 publications

References 58 publications

Configurable switching behavior in polymer-based resistive memories by adopting unique electrode/electrolyte arrangement

Configurable switching behavior in polymer-based resistive memories by adopting unique electrode/electrolyte arrangement

Degradation pathways in standard and inverted DBP-C70 based organic solar cells

Quantitative prediction of the structure and properties of Li₂O–Ta₂O₅–SiO₂ glasses via phase diagram approach

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The effects of Ta2O5–ZnO films as cathodic buffer layers in inverted polymer solar cells

Abstract: Ta2O5–ZnO composite films with varied composition were fabricated by sol–gel processing and applied as cathodic buffer layers (CBLs) for inverted polymer solar cells, and demonstrated enhanced power conversion efficiency with excellent stability.

Cited by 34 publications

References 58 publications

Configurable switching behavior in polymer-based resistive memories by adopting unique electrode/electrolyte arrangement

Configurable switching behavior in polymer-based resistive memories by adopting unique electrode/electrolyte arrangement

Degradation pathways in standard and inverted DBP-C70 based organic solar cells

Quantitative prediction of the structure and properties of Li2O–Ta2O5–SiO2 glasses via phase diagram approach

Contact Info

Product

Resources

About

The effects of Ta₂O₅–ZnO films as cathodic buffer layers in inverted polymer solar cells

Quantitative prediction of the structure and properties of Li₂O–Ta₂O₅–SiO₂ glasses via phase diagram approach