Molybdenum trioxide (MoO3)
CAS Number 1313-27-5
Metal Oxides, Hole Transport Layer Materials, Advanced Ceramic Materials, Latest Products,
Molybdenum trioxide, an advanced inorganic electronic material
A genuinely versatile material used in solar cells, OLEDs, transistors, and batteries
Overview | Product Information | MSDS | Literature | Related Products | Technical Support
Molybdenum trioxide (CAS 1313-27-5) is a metal oxide with a chemical formula of MoO3. Owing to its low-lying conduction band, this material is a popular candidate for hole transport layer in OLEDs and solar cells. When incorporated as a diffusion-barrier layer within a MoOx/Cr/Al noble-metal-free electrode stack in perovskite solar cells, MoO3 (15 nm) deliveries a substantial improvement in PCE of 25.52% and FF of 85.48%. Molybdenum trioxide also effectively suppresses bi-directional ion diffusion and stabilizes the interface between perovskite and electrode.
In 2D semiconductor transistors, the high-κ gate dielectric properties of molybdenum trioxide enable superior performance of current on/off ratio up to 7 × 107, low subthreshold swing (SS) of 78 mV/Dec, and low leakage current below 10-4 A/cm2
Molybdenum trioxide is commonly deposited via physical vapor deposition during device fabrication. A facile solution-processing route has also been developed, in which MoO3 is converted into a dark blue peroxomolybdic acid solution in alcohol using hydrogen peroxide. This solution can then be spin-coated onto the substrate and baked to yield the final MoO3 thin film.
Hole Transport Material
For OLEDs and perovskite solar cells
Desirable Band Structure
Improved device performance
Simple Worldwide shipping
Reliable delivery via tracked courier
High Purity Metal Oxide
99.9% for effective performance
General Information
| CAS Number | 1313-27-5 |
|---|---|
| Chemical Formula | MoO3 |
| Full Name | Molybdenum (VI) oxide |
| Molecular Weight | 143.9 g/mol |
| Melting Point | 795°C |
| Energy Level |
Conduction band = −6.7 eV Valence band = −9.7 eV |
| Synonyms | Trioxomolybdenum, molybdenum oxide, molybdic trioxide |
| Classification or Family | Perovskite solar cell, Hole transport layers, Advanced ceramic materials, Metal oxides, inorganic electronic materials, perovskite interface materials, OLED |
Product Details
| Purity | 99.9% |
|---|---|
| Particle Size | 20 nm |
| Appearance | Gray powder |
MSDS Documentation
Molybdenum Trioxide MSDS Sheet
Literature
- High-performance noble-metal-free perovskite solar cells enabled by MoOx/Cr/Al multilayer electrodes, W. Kim et al., Adv. Energy Mater., e70950 (2026); DOI: 10.1002/aenm.70950.
- A simple synthesis method to prepare a molybdenum oxide hole-transporting layer for efficient polymer solar cells, Y. Li et al., RSC Adv., 7, 7890 (2017); DOI: 10.1039/c7ra00303j.
- Evaporated organic–MoO3 composite hole transport layers toward stable perovskite solar cells, J. Hong et al., EES Sol., 1, 107 (2025); DOI: 10.1039/d4el00024b.
