Fu, Harold J. and Ardo, Shane and Lewis, Nathan S. (2019) Transparent, mixed proton/electron conducting Nafion-PEDOT:PSS composite for tandem microwire array solar water splitting devices. In: 257th ACS National Meeting & Exposition, 31 March-4 April 2019, Orlando, FL. https://resolver.caltech.edu/CaltechAUTHORS:20190325-082415070
Full text is not posted in this repository. Consult Related URLs below.
Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20190325-082415070
Abstract
One proposed integrated solar water splitting device involves two ion-exchange membrane-embedded, semiconducting micro-/nanowire arrays elec. connected as a tandem. Such an elec. connection must be optically transparent, ion permeable, and adhere to each membrane-embedded array. A composite Nafion-Poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT:PSS) film possesses excellent adhesion and charge transport properties while being more transparent than PEDOT:PSS alone. Understanding the phase-sepn. behavior between conductive and non-conductive domains via PeakForce Tunneling Atomic Force Microscopy (PF-TUNA) enables insight towards the Nafion-PEDOT interactions that explain bulk elec. properties. A percolative network of conductive PEDOT domains held by a Nafion/PSS bulk enable electron conduction while maintaining the mech. stability and proton conducting properties of Nafion. Addn. of DMSO reduces these domain sizes from mm to nm scale, producing a dramatic >10^4 fold increase in lateral cond. Nanoscale current-voltage sweeps probe the spatial variations of ohmic behavior that lead to macroscale contact resistance at composite/p-Si interfaces. The measured composite properties are input into a sensitivity anal. that guides device design via load-line anal. of a model tandem water splitting device.
Item Type: | Conference or Workshop Item (Paper) | ||||||||
---|---|---|---|---|---|---|---|---|---|
Related URLs: |
| ||||||||
ORCID: |
| ||||||||
Additional Information: | © 2019 American Chemical Society. | ||||||||
Record Number: | CaltechAUTHORS:20190325-082415070 | ||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20190325-082415070 | ||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||
ID Code: | 94086 | ||||||||
Collection: | CaltechAUTHORS | ||||||||
Deposited By: | Tony Diaz | ||||||||
Deposited On: | 25 Mar 2019 15:28 | ||||||||
Last Modified: | 30 Oct 2020 18:28 |
Repository Staff Only: item control page