A Simple and Cost Effective Method for Making Hole Transport Layer (HTL) Materials for Organic Electronics
- Advanced Materials
Key Problem and Market Opportunity
- The Hole Transport Layer (HTL) provides electron mobility in organic lighting devices (OLED). PEDOT:PSS is conventionally an ideal HTL material for testing OLED performance because it is highly electro-conductive and transparent in the visible light spectrum. However, PEDOT:PSS has limited lifetime for production environment due to its acidic property and causes corrosion of the ITO anode.
- Therefore, our materials can be a replacement for achieving longer lifetime for organic electronic devices without compromising its performance.
Key Advantages of the Technology
- Low-temperature one-step solution-process method for synthesizing transition metal oxides (TMOs) for HTL
- Water-free process – enhance yield and lifetime
- Tested with multiple TMOs. For instance, molybdenum oxide (MoO3), vanadium oxide (V2O5) and tungsten oxide (WO3)
|Annealing temperature (10mins)||80°C||100°C||100°C||140°C|
|Open-circuit voltage for OSC (VOC)||0.625 V||0.625 V||0.489 V||0.633 V|
|Close-circuit current for OSC (JSC) (mA/cm2)||9.38||9.71||8.60||9.28|
|Fill Factor (FF) (%)||67.15||63.61||56.48||62.69|
|Power conversion efficiency||3.94%||3.86%||2.37%||3.68%|
Photovoltaic parameters for organic solar cells (OSC) with TMOs and PEDOT:PSS (approximate values)
Potential Product and Services
- Hole Transport Materials for Organic Electronics (HTL) such as OLED and organic solar cell
Development status and IP Strength
- US Patent no. 9540249
- Chinese Patent no. ZL 201380046404.8
- Broad protection for a wide selection of transition metal.
- Device prototype is available in laboratory scale