Ossila Tantalum (V) Oxide Powder is tantalum pentoxide (Ta2O5, CAS 1314-61-0), an off-white dielectric metal oxide supplied with a particle size of 200 nm. In its amorphous form it offers a high dielectric constant of 22-25, which makes it a widely used material for capacitor manufacturing.
Beyond capacitors, Ta2O5 has been employed as the gate dielectric in cadmium sulfide (CdS) field-effect transistors, where devices reached an electron mobility of 2.97 cm2/V·s at a low threshold voltage of 1.0 V.
In photovoltaics research, tantalum oxide functions as an electron transport layer and as a passivation layer in perovskite solar cells. Adding a Ta2O5 layer raises the open-circuit voltage of mesoscopic perovskite devices, with a power conversion efficiency of 21.3% reported for an FTO/mesoporous-TiO2/Ta2O5/perovskite/spiro-OMeTAD/Au architecture. The powder is offered in 10 g, 25 g and 50 g packs.
- Dielectric material for the production of capacitors.
- Gate dielectric in cadmium sulfide (CdS) field-effect transistors.
- Electron transport layer in perovskite solar cells.
- Passivation and interlayer material for perovskite solar cells.
- Research into tantalum oxide materials for batteries.
| Brand | Ossila |
|---|---|
| CAS number | 1314-61-0 |
| Molecular formula | Ta2O5 |
| Purity | 99.99% |
| Category | — |
| Pack sizes | 10 g, 25 g, 50 g |
| Physical form | Off-white powder |
| Storage | — |
- Product code: M2489A2
- Full Name: Ditantalum pentaoxide
- Synonyms: Tantalum pentoxide, Tantalum oxide
- Molecular Weight: 441.89 g/mol
- Melting Point: 1800 °C
- Particle Size: 200 nm
- Dielectric Constant (amorphous): 22-25
—
—