Abstract
A novel dual photoabsorber interface: perovskite oxynitride (SrNb02N) deposited on silicon (100), and a H2ER catalyst photoabsorber interface: (Ni5P4 or Ni2P)-silicon, are fabricated. Titanium nitride (TiN) is introduced as a blocking layer between Sr2Nb:07 and Si (100), which produces clean interfaces. During the high temperature ammonolysis step needed to convert Sr2Nb207 to SrNb02N, it is effective at blocking Nb and Si (but not Sr) migration. A half-cell cathode with the H2ER catalyst (Ni5P4 or Ni2P)-photoabsorber interface produces H2 approaching best-in-class overpotentials for films (N15P4: 211mV vs RHE at 10mV/cm2) with a 50mV/decade Tafel slope. Films are atomically smooth, except for surface phosphate that is removed during electrolysis.
| Original language | English |
|---|---|
| Title of host publication | Renewable Fuels via Artificial Photosynthesis or Electrolysis |
| Publisher | Electrochemical Society Inc. |
| Pages | 1-19 |
| Number of pages | 19 |
| Volume | 72 |
| Edition | 37 |
| ISBN (Electronic) | 9781607685395 |
| DOIs | |
| Publication status | Published - 2016 |
| Event | Symposium on Renewable Fuels via Artificial Photosynthesis or Electrolysis - 229th ECS Meeting - San Diego, United States Duration: May 29 2016 → Jun 2 2016 |
Other
| Other | Symposium on Renewable Fuels via Artificial Photosynthesis or Electrolysis - 229th ECS Meeting |
|---|---|
| Country | United States |
| City | San Diego |
| Period | 5/29/16 → 6/2/16 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Optimizing "artificial leaf photoanode-photocathode-catalyst interface systems for solar water splitting. / Porter, S. H.; Hwang, S.; Amarasinghe, V.; Taghaddos, E.; Manichev, V.; Li, M.; Gardner, G.; Safari, A.; Garfunkel, Eric; Greenblatt, M.; Dismukes, G Charles.
Renewable Fuels via Artificial Photosynthesis or Electrolysis. Vol. 72 37. ed. Electrochemical Society Inc., 2016. p. 1-19.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Optimizing "artificial leaf photoanode-photocathode-catalyst interface systems for solar water splitting
AU - Porter, S. H.
AU - Hwang, S.
AU - Amarasinghe, V.
AU - Taghaddos, E.
AU - Manichev, V.
AU - Li, M.
AU - Gardner, G.
AU - Safari, A.
AU - Garfunkel, Eric
AU - Greenblatt, M.
AU - Dismukes, G Charles
PY - 2016
Y1 - 2016
N2 - A novel dual photoabsorber interface: perovskite oxynitride (SrNb02N) deposited on silicon (100), and a H2ER catalyst photoabsorber interface: (Ni5P4 or Ni2P)-silicon, are fabricated. Titanium nitride (TiN) is introduced as a blocking layer between Sr2Nb:07 and Si (100), which produces clean interfaces. During the high temperature ammonolysis step needed to convert Sr2Nb207 to SrNb02N, it is effective at blocking Nb and Si (but not Sr) migration. A half-cell cathode with the H2ER catalyst (Ni5P4 or Ni2P)-photoabsorber interface produces H2 approaching best-in-class overpotentials for films (N15P4: 211mV vs RHE at 10mV/cm2) with a 50mV/decade Tafel slope. Films are atomically smooth, except for surface phosphate that is removed during electrolysis.
AB - A novel dual photoabsorber interface: perovskite oxynitride (SrNb02N) deposited on silicon (100), and a H2ER catalyst photoabsorber interface: (Ni5P4 or Ni2P)-silicon, are fabricated. Titanium nitride (TiN) is introduced as a blocking layer between Sr2Nb:07 and Si (100), which produces clean interfaces. During the high temperature ammonolysis step needed to convert Sr2Nb207 to SrNb02N, it is effective at blocking Nb and Si (but not Sr) migration. A half-cell cathode with the H2ER catalyst (Ni5P4 or Ni2P)-photoabsorber interface produces H2 approaching best-in-class overpotentials for films (N15P4: 211mV vs RHE at 10mV/cm2) with a 50mV/decade Tafel slope. Films are atomically smooth, except for surface phosphate that is removed during electrolysis.
UR - http://www.scopus.com/inward/record.url?scp=85010818942&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85010818942&partnerID=8YFLogxK
U2 - 10.1149/07237.0001ecst
DO - 10.1149/07237.0001ecst
M3 - Conference contribution
VL - 72
SP - 1
EP - 19
BT - Renewable Fuels via Artificial Photosynthesis or Electrolysis
PB - Electrochemical Society Inc.
ER -