The Origin of Surface Stress Induced by Adsorption of Iodine on Gold

Evans, Drew; Craig, Vincent S. J.

doi:10.1021/jp063232e

Cited by 9 publications

(10 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The peak position of I 3 d at 618.8 eV indicates that migration of a iodine‐containing compound occurs independently of the presence of Ag. Iodine has a strong affinity for metals . In the final step of the process, MAI reacts with Ag to form AgI, corroding the electrode.…”

Section: Resultsmentioning

confidence: 99%

Silver Iodide Formation in Methyl Ammonium Lead Iodide Perovskite Solar Cells with Silver Top Electrodes

Kato

Ono

Lee

et al. 2015

Adv Materials Inter

709

585

View full text Add to dashboard Cite

Silver is a low‐cost candidate electrode material for perovskite solar cells. However, in such cells the silver electrodes turn yellow within days of device fabrication. The color change is also accompanied by a dramatic decrease in the power conversion efficiency when compared to otherwise identical devices using gold electrodes. Here, it is shown that the color change results from silver oxidation to silver iodide, due to a reaction with iodine in methyl ammonium lead perovskite. The change in X‐ray diffraction and X‐ray photoelectron spectroscopy is discussed. Exposure to air accelerates corrosion of the Ag electrodes when compared to dry nitrogen gas exposure. However, iodine not reacted with silver is observed by X‐ray photoelectron spectroscopy even for the perovskite solar cell kept in dry nitrogen gas. It is proposed that silver iodide is formed when methyl ammonium iodide migration is facilitated by the small pinholes in the hole transport layer spiro‐MeOTAD.

show abstract

Section: Resultsmentioning

confidence: 99%

Silver Iodide Formation in Methyl Ammonium Lead Iodide Perovskite Solar Cells with Silver Top Electrodes

Kato

Ono

Lee

et al. 2015

Adv Materials Inter

709

585

View full text Add to dashboard Cite

show abstract

“…The above modeling of the effect of the interfacial stress is from the third model presented in Ref. [24], which in essence is a local stressor model [11,26] . The external work of W 3 due to the pressure exerted by the viscous layer of q is as follows:…”

Section: Equation Of Equilibriummentioning

confidence: 99%

Local bending of thin film on viscous layer

Yin

Liu

2010

Acta Mechanica Solida Sinica

View full text Add to dashboard Cite

Effects of deposition layer position and number/density on local bending of a thin film are systematically investigated. Because the deposition layer interacts with the thin film at the interface and there is an offset between the thin film neutral surface and the interface, the deposition layer generates not only axial stress but also bending moment. The bending moment induces an instant out-of-plane deflection of the thin film, which may or may not cause the socalled local bending. The deposition layer is modeled as a local stressor, whose location and density are demonstrated to be vital to the occurrence of local bending. The thin film rests on a viscous layer, which is governed by the Navier-Stokes equation and behaves like an elastic foundation to exert transverse forces on the thin film. The unknown feature of the axial constraint force makes the governing equation highly nonlinear even for the small deflection case. The constraint force and film transverse deflection are solved iteratively through the governing equation and the displacement constraint equation of immovable edges. This research shows that in some special cases, the deposition density increase does not necessarily reduce the local bending. By comparing the thin film deflections of different deposition numbers and positions, we also present the guideline of strengthening or suppressing the local bending.

show abstract

“…Corrections to Eq. (12) in order to make it more accurate have been recently proposed [31,33,34]. However, Eq.…”

Section: Microcantilever Bending Induced By Dna Hybridizationmentioning

confidence: 99%

Thermodynamics of mechanical transduction of surface confined receptor/ligand reactions

Bergese

Oliviero

Alessandri

et al. 2007

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

The Origin of Surface Stress Induced by Adsorption of Iodine on Gold

Cited by 9 publications

References 45 publications

Silver Iodide Formation in Methyl Ammonium Lead Iodide Perovskite Solar Cells with Silver Top Electrodes

Silver Iodide Formation in Methyl Ammonium Lead Iodide Perovskite Solar Cells with Silver Top Electrodes

Local bending of thin film on viscous layer

Thermodynamics of mechanical transduction of surface confined receptor/ligand reactions

Contact Info

Product

Resources

About