[14a-A41-1~11] 12.5 Organic solar cells

▼ [14a-A41-11] CH₃NH₃PbI₃ Perovskite Solar Cells Employing Cu-Phthalocyanine Doped Poly-3-hexylthiophene Hole-Transporting Layer

〇(D)Vincent Obiozo Eze¹, Yoshiyuki Seike¹, Tatsuo Mori¹ (1.Aichi Inst. of Tech.)

Keywords:Perovskite Solar Cells, Hole Transport Layer, Cu-Phthalocyanine

Organic-inorganic perovskite solar cells (PSCs) have recently emerged at the forefront of photovoltaics research. Over the past six years, the power conversion efficiencies (PCEs) have rapidly increased from 3.8% in 2009 to approximately 20% in 2015. Herein, we report the use of hydrophobic poly (3-hexylthiophene) (P3HT) Hole transport layer (HTL) to prevent moisture ingress into the perovskite layer. Cu-phthalocyanine (CuPc) chlorobenzene suspension is introduced as a dopant for enhancing charge extraction. CuPc is thermally and chemically very stable material, and by mixing with a P3HT solution, the aggregation of CuPc nanoparticles was suppressed. Interestingly, the incorporation of the CuPc into P3HT solution led to the significant enhancement of the PSCs’ efficiency from 7.90% to 10.10%.