Seyeong Song

1 Introduction Organic solar cells (OSCs) have emerged as promising renewable energy sources owing to their advantages of facile processing, [1-4] low-cost manufacturing, [5, 6] tunable absorption, [7, 8] and lightweight [9]. Recent advances in non-fullerene acceptors (NFAs) [10-12], easily tunable electrical and optical properties, have dramatically enhanced the power conversion efficiency (PCE) of single-junction OSCs to over 20.82% [13-15].

Abstract Perovskite solar cells (PSCs) are highly attractive for space applications due to their high power-to-weight ratio, yet their reliability under extreme thermal environments remains unclear. Here we investigate interfacial stability in devices employing polymeric PTAA, self-assembled monolayer MeO-2PACz, and a sequential PTAA/MeO-2PACz bilayer. Devices were evaluated under space-relevant conditions, including vacuum, AM0 illumination and thermal cycling spanning −40 °C to 90 °C.

Processing for obtaining compact and uniform perovskite photoactive layer has intensively studied last few years to achieve high power conversion efficiencies (PCEs) in solar cells. Especially, high quality crystal growth of perovskite layer is crytical point to enhance device performance. We demonstrated easy and effective new process for high efficiency p-i-n planar heterojunction structure of perovskite solar cells (PeSCs) by handling the compact seed perovskite layer (CSPL).