Bis-PC72BM is a derivative of Fullerene C70. Used as an electron acceptor from Donor materials such as P3HT (SOL4106), PCDTBT (SOL4280), or PTB7 (SOL4700) to make high Open Circuit Voltage (Voc), high Power Conversion Efficiency (PCE) bulk heterojunction solar cells, >99.9% [6,6] isomerized.
Used as an electron acceptor from Donor materials such as P3HT (SOL4106), PCDTBT (SOL4280), or PTB7 (SOL4700) to make high Open Circuit Voltage (Voc), high Power Conversion Efficiency (PCE) bulk heterojunction solar cells, >99.9% [6,6] isomerized. Available for large scale projects.
Para llevar esta página del Bis-PC72BM (SOL5072) a un nivel de autoridad técnica que mejore tu ranking en Google y ayude a los investigadores a elegir este material sobre el PC71BM estándar, he redactado una descripción ampliada de alta calidad.
Este texto se enfoca en la ventaja competitiva principal de los bis-aductos: el incremento del Voltaje de Circuito Abierto ($V_{oc}$).
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The Bis-PC72BM (SOL5072), also known as Bis[70]PCBM, is a high-performance bis-adduct fullerene derivative based on the C70 cage. While the mono-adduct PC71BM is the industry workhorse, the Bis-PC72BM is engineered for researchers seeking to push the boundaries of Power Conversion Efficiency (PCE) in organic photovoltaics (OPV).
As a specialized fullerene manufacturer, Solaris Chem produces SOL5072 with high isomer purity, ensuring that this material provides the electronic stability and morphology control required for advanced solar cell architectures.
The primary reason for selecting Bis-PC72BM over standard PC71BM is its effect on the device’s energy levels. In organic solar cells, the Open Circuit Voltage Voc is directly related to the energy gap between the HOMO of the donor polymer and the LUMO of the fullerene acceptor.
Higher LUMO Level: The addition of a second solubilizing group to the C70 cage (the “bis” factor) raises the LUMO energy level of the molecule.
Voltage Boost: By elevating the LUMO level, SOL5072 effectively increases the $V_{oc}$ of the solar cell, which is often the most significant bottleneck in achieving higher efficiencies with standard donor materials like P3HT.
Efficiency Gains: Research has shown that replacing PC71BM with Bis-PC72BM can lead to a substantial increase in overall PCE, primarily driven by this voltage enhancement.
Like its mono-adduct counterpart, Bis-PC72BM leverages the asymmetrical nature of the C70 fullerene cage. Unlike C60-based derivatives, the C70 structure allows for more electronic transitions, resulting in:
Broader Optical Absorption: Better harvesting of photons in the visible spectrum (400 nm to 700 nm).
Increased Short-Circuit Current Jsc: The enhanced absorption contributes to a higher density of generated excitons compared to C60 bis-adducts.
The SOL5072 is a versatile acceptor that creates high-efficiency bulk heterojunction (BHJ) layers. It is particularly effective when paired with:
P3HT (SOL4106): Known for creating a “high-voltage” version of the classic P3HT:PCBM cell.
PCDTBT (SOL4280): Optimized for high stability and improved charge transport.
PTB7 (SOL4700): A premium donor that, when paired with Bis-PC72BM, can achieve state-of-the-art performance in flexible solar cell research.
Solubility is a critical factor for “printable” electronics. Bis-PC72BM (SOL5072) is specifically designed for high solubility in standard organic solvents used in laboratory and industrial coating processes:
Preferred Solvents: Toluene, Chlorobenzene, and 1,2-Dichlorobenzene.
Solution Processing: This high solubility allows for the creation of stable donor/acceptor ink formulations, essential for spin-coating, blade-coating, and slot-die coating techniques on flexible plastic substrates.
Choose between:
Grade > 98.00% (SOL5072A)
Safety Data Sheet – SDS-SOL5072
Technical Data Sheet:
| Acronyms: | Bis PC72BM – Bis[70]PCBM – Bis-PCBM, PC70BM bisadduct |
| Chemical Name: | Bis(1-[3-(methoxycarbonyl) propyl]-1-phenyl)-[6.6]C72 ; [6,6] diphenyl C72 bis(butyric acid methyl ester) |
| CAS# | 1048679-01-1 |
| Color and Texture: | brown to black |
| Molecular Weight: | 1031 g/mol |
| Absorption, λmax (Media): | N/A |
| Emission, λmax (Media): | N/A |
| HOMO (eV): | N/A |
| LUMO (eV): | N/A |
| Melting point (°C): | N/A |
| Solubility (Solvent): | Toluene, chlorobenzene, 1,2-o-dichlorobenzene |
| Other: | N/A |
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Products for Research and Development. Laboratory use only by qualified personnel. The user should read the available SDS and be aware of any precaution to take for the safe manipulation of these materials. Solarischem shall not be held responsible for any damage resulting from the use or handling of these products. Any product can be discontinued, specifications altered or price changed at any time without prior notice. The specifications and structures do not guarantee any product’s suitability for the client’s applications or uses.
