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fig1d_raw_data.xlsx
Two Si/GaN photocathodes were compared. Sample #1 (named as S#1) was the as-received sample, and sample #2 (named as S#2) was chronoamperometry (CA) tested for 4 hours under same testing conditions described in Fig.1a. The PEC performance (photocurrent density vs voltage, J-V curve) was recorded for both samples. Then a photodeposition of Pt was performed on both samples, each loading time was set to be 5 minutes, then the J-V curve was recorded to track the changes of the performance. The Pt photodeposition was stopped until the J-V curve won't shift (the maximum onset potential was achieved). The results show that, S#1 needs at least 20 minutes of Pt photodeposition to achieve its best PEC performance while S#2, which is after CA testing, only needs 5 minutes of Pt photodeposition to achieve its best PEC performance.
Resource Metadata
| data source | LBL PEC Stand 1 |
|---|---|
| data tool | Multi-spectra |
| lab environment | Indoor Lab |
| measurement | Biased |
| measurement type | JV |
| metadata modified | 4 years ago |
| mimetype | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
| size | 99.7 KiB |
| Last updated | February 3, 2021 |
|---|---|
| Created | February 3, 2021 |
| Format | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
| License | No License Provided |