In-line spectroscopic ellipsometry for the monitoring of the optical properties and quality of roll-to-roll printed nanolayers for organic photovoltaics

Logothetidis, S.; Georgiou, D.; Laskarakis, A.; Koidis, C.; Kalfagiannis, N.

doi:10.1016/j.solmat.2013.01.007

Cited by 28 publications

(25 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A system has been developed with single point monitoring, which can scan the sample surface with movement stages [102,103]. This has been used to monitor roll-to-roll printed organic solar cell layers on a lab-scale system.…”

Section: Thickness Monitoringmentioning

confidence: 99%

“…This system has been used to characterize barrier films of homogeneous metal layers on PET and tested at an industrial site [104], using the methodology of Logothetidis mentioned above [102]. Recent work in the Clean4Yield project has led to improved acquisition times of 1–10 ms and the addition of an index-matching roller to reduce the strength of back-reflections from the underside of the substrate [87].…”

Section: Thickness Monitoringmentioning

confidence: 99%

See 1 more Smart Citation

Recent Prospects in the Inline Monitoring of Nanocomposites and Nanocoatings by Optical Technologies

et al. 2016

View full text Add to dashboard Cite

Nanostructured materials have emerged as a key research field in order to confer materials with unique or enhanced properties. The performance of nanocomposites depends on a number of parameters, but the suitable dispersion of nanoparticles remains the key in order to obtain the full nanocomposites’ potential in terms of, e.g., flame retardance, mechanical, barrier, thermal properties, etc. Likewise, the performance of nanocoatings to obtain, for example, tailored surface affinity with selected liquids (e.g., for self-cleaning ability or anti-fog properties), protective effects against flame propagation, ultra violet (UV) radiation or gas permeation, is highly dependent on the nanocoating’s thickness and homogeneity. In terms of recent advances in the monitoring of nanocomposites and nanocoatings, this review discusses commonly-used offline characterization approaches, as well as promising inline systems. All in all, having good control over both the dispersion and thickness of these materials would help with reaching optimal and consistent properties to allow nanocomposites to extend their use.

show abstract

Section: Thickness Monitoringmentioning

confidence: 99%

Section: Thickness Monitoringmentioning

confidence: 99%

Recent Prospects in the Inline Monitoring of Nanocomposites and Nanocoatings by Optical Technologies

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Clearly, the use of in‐situ ellipsometry for the characterization of conjugated polymer films upon annealing or during deposition is still at an early stage of development, but very promising results have already been reported, encouraging further investigations. In particular, it could represent a very powerful technique to understand the molecular kinetics during film formation and post‐deposition treatments, as well as for the in‐situ characterization of layers and stacks during roll‐to‐roll processing …”

Section: In‐situ Ellipsometry For Monitoring Film Deposition and Strumentioning

confidence: 99%

“…The technique can be applied in‐situ and in real‐time, allowing both the determination of thin film phase transition temperatures and studies of drying kinetics during film deposition and temporal changes in morphology during post‐deposition treatments (thermal and solvent annealing, etc.) Recently, ellipsometry has even been proposed for in‐line monitoring of organic photovoltaic (OPV) thin film microstructure during roll‐to‐roll processing …”

Section: Introductionmentioning

confidence: 99%

Advanced Ellipsometric Characterization of Conjugated Polymer Films

Campoy‐Quiles

Alonso

Bradley

et al. 2013

Adv Funct Materials

View full text Add to dashboard Cite

Conjugated polymers are attracting worldwide attention due to their potential for use as the active layer in advanced electronic, optoelectronic, and energy harvesting applications, and their cost-effective and low thermal budget processing traits. As the technologies based on these materials develop, new and more sensitive characterization techniques are needed. Recent progress on the use of spectroscopic ellipsometry as a highly sensitive and non-invasive method to obtain fundamental information about conjugated polymer fi lms is reviewed. After a brief introduction to the practical details of the technique, the use of ellipsometry to determine optical parameters that provide insight into fi lm morphology is described, including physical phase and molecular orientation, and resulting electronic structure. The characterization of layered systems and the use of in-situ ellipsometry as a means to gain understanding of the kinetics that occur during fi lm deposition and post-deposition thermal and solvent vapor treatment is also discussed.

show abstract

“…The system was used to study the interaction of the over‐coating of several functional layers in organic tandem solar cells, and 3D X‐ray phase contrast imaging (ptychography) gave further insight into a complete 12‐layer solar cell stack 127. Another method that has been explored for in‐line measurements of film thicknesses and optical properties of OPV‐specific layers is spectroscopic ellipsometry 128. The high‐speed measurement system has been integrated into an experimental R2R gravure printing machine to study printed transparent electrodes, active layer inks, and barrier layers under different processing conditions such as corona treatment or drying temperature.…”

Section: Solution‐processed Pv: From Lab To Fabmentioning

confidence: 99%

Development of Lab‐to‐Fab Production Equipment Across Several Length Scales for Printed Energy Technologies, Including Solar Cells

2015

View full text Add to dashboard Cite

We describe and review how the scaling of printed energy technologies not only requires scaling of the input materials but also the machinery used in the processes. The general consensus that ultrafast processing of technologies with large energy capacity can only be realized using roll‐to‐roll methods is taken as a premise, and thus the progression from a highly successful laboratory technique (i.e., spin coating) to large‐scale roll‐to‐roll equipment is described in terms of all of the intermediate steps that must be available to make the transfer possible. Spin coating is compatible with materials availability on the small scale and efficient scaling of equipment is a demanding task that must be performed in parallel with increasing materials availability. We outline that 3–5 processing platforms are necessary to efficiently take the laboratory technology to a version that represents the lower end of the industrial scale. The machinery bridges the gap through firstly achieving improved ink efficiency without surface contact, followed by better ink efficiency at higher speeds, and finally large‐area processing at high speed with very high ink efficiency.

show abstract

In-line spectroscopic ellipsometry for the monitoring of the optical properties and quality of roll-to-roll printed nanolayers for organic photovoltaics

Cited by 28 publications

References 56 publications

Recent Prospects in the Inline Monitoring of Nanocomposites and Nanocoatings by Optical Technologies

Recent Prospects in the Inline Monitoring of Nanocomposites and Nanocoatings by Optical Technologies

Advanced Ellipsometric Characterization of Conjugated Polymer Films

Development of Lab‐to‐Fab Production Equipment Across Several Length Scales for Printed Energy Technologies, Including Solar Cells

Contact Info

Product

Resources

About