Non-fullerene Electron-Transporting Polymer

Photothermally stable and efficient

A solution-processable cyano-functionalized polymer ETM that delivers high electron mobility, excellent photothermal stability, and improved interfacial contact with the perovskite layer.

Feng, Kui · Wang, Guoliang · Lian, Qing · Li, Bolin · Yang, Wanli · Zeng, Jie · Zhang, Yong · Jeong, Sang-young · Xu, Baomin · Ho-Baillie, Anita Wing Yi · Woo, Han Young · Antonio, Facchetti · Guo, Xugang

Nature Materials 2025

Specifications

Power conversion efficiency

{'zh': '26.0', 'en': '26.0'} %

Certified PCE

{'zh': '25.4', 'en': '25.4'} %

T80 lifetime

{'zh': '1300', 'en': '1300'} h

Advantages

Solution-processable

It can be processed from solution via spin coating or blade coating, eliminating thermal evaporation.

Photothermally stable

Achieves T80 approaching 1,300 h under ISOS-L-3, far exceeding PCBM stability.

High efficiency

Delivers 26.0% PCE (certified 25.4%) with average >25% across additional polymers.

Applications

• Perovskite solar cells：Replaces fullerene ETMs for efficient, stable inverted PSCs.
• Organic electron-transporting materials：Offers a new non-fullerene ETM with high mobility and processability.
• Flexible optoelectronics：Solution-processable for flexible substrates in tandem with flexible photovoltaics.
• Photovoltaic stability enhancement：Enhances operational lifetime under combined light-heat stress.