Ioakeimidis Apostolos, Galatopoulos Fedros, Hauser Alina, Rossier Michael, Choulis Stelios A
Molecular Electronics and Photonics Research Unit, Department of Mechanical Engineering and Materials Science and Engineering, Cyprus University of Technology, Limassol 3603, Cyprus.
Avantama AG, Laubisruetistr. 50, Staefa 8712, Switzerland.
ACS Appl Electron Mater. 2025 Apr 24;7(9):3940-3946. doi: 10.1021/acsaelm.5c00201. eCollection 2025 May 13.
We present significant light stability enhancement of nonfullerene acceptor inverted organic photovoltaics by incorporating a mixed nanocomposite metal oxide electron transporting layer. Using an appropriate mixture of ZnO:SnO nanoparticles as an electron transporting layer in a PBDB-TF-T1 (T1):IT4F based organic solar cell device mitigates light induced photodegradation by lowering the defect formation at the active layer interface. We propose that the mixed metal oxide ETL act as hole scavengers that reduces the photocatalytic reaction of its surface. The optimized nanocomposite mixture of ZnO:SnO 10:90 (%V) provides higher light stability (ISOS-L2 protocol), prolonging the inverted OSCs lifetime (80% of the initial PCE, T80) by ∼16.5 times compared to the commonly used pristine ZnO electron transporting layer.
我们通过引入混合纳米复合金属氧化物电子传输层，显著提高了非富勒烯受体倒置有机光伏电池的光稳定性。在基于PBDB-TF-T1（T1）:IT4F的有机太阳能电池器件中，使用适当混合的ZnO:SnO纳米颗粒作为电子传输层，通过减少活性层界面处的缺陷形成，减轻了光诱导的光降解。我们提出，混合金属氧化物电子传输层充当空穴清除剂，减少其表面的光催化反应。优化后的ZnO:SnO 10:90（%V）纳米复合混合物具有更高的光稳定性（ISOS-L2协议），与常用的原始ZnO电子传输层相比，倒置有机太阳能电池的寿命（初始光电转换效率的80%，T80）延长了约16.5倍。
