Interface passivation using diketopyrrolopyrrole?oligothiophene copolymer to improve the performance of perovskite solar cells
Sprache des Titels:
Englisch
Original Kurzfassung:
The unprecedented increase in power conversion efficiency (PCE) of low?cost organo?inorganic halide perovskite solar cells (OIHPSCs) toward its Shockley?Queisser limit intriguingly has prompted researchers to investigate the disadvantages of these devices. The issue of operational stability is the main hurdle challenging the way forward for commercialization. To address this, various engineering processes like composition, additives, anti?solvents, bulk and interface passivation, and deposition techniques have been widely applied to manage both extrinsic and intrinsic factors that induce degradation of the OIHPSCs. In this work, we employed interface passivation, which is an efficient approach to reduce nonradiative recombination. An ultrathin layer of electron donor diketopyrrolopyrrole?oligothiophene copolymer (DPP860) was applied as an interface passivator between the photoactive layer and [6,6 ?