Interface modification for organic and perovskite solar cells

Abstract

Organic solar cells (OSCs) continuously attract much attention due to their potentials as the low-cost and lightweight sources of renewable energy, and the power conversion efficiency (PCE) of the state-of-the-art OSCs has reached over 10.0%. Especially, there has been an unexpected breakthrough and rapid evolution of highly efficient organic-inorganic hybrid perovskite solar cells (PSCs), and the PCE has been improved to over 20%. The interface plays a very important role on the performance of both OSCs and PSCs, as well as their stability. It is imperative to control the interface properties and understand the mechanisms for obtaining highly efficient OSCs and PSCs. In this review, we will summarize our research progress on the interface modification of OSCs and PSCs using the electron transport layer and hole transport layer, as well as the molecular template layer.

Low‐Temperature Processed, Efficient, and Highly Reproducible Cesium‐Doped Triple Cation Perovskite Planar Heterojunction Solar Cells

“…Meanwhile, PSCs could be fabricated via large‐scale, low‐cost roll‐to‐roll (R2R) printing process . Now there are many researches focusing on the fabrication of high‐quality perovskite thin film, interface modification, and large‐area fabrication techniques, which would greatly accelerate the development and commercialization of PSCs.…”

Interface modification with PCBM intermediate layers for planar formamidinium perovskite solar cells

“…Interface modication with intermediate layers is an effective method for improving lm deposition and suppressing the recombination process. [22][23][24] Fullerene derivatives are a kind of extensively used acceptor material, which can be used as an intermediate layer for electron transport. Li et al developed a triblock fullerene derivative for passivating the TiO 2 surface and reducing the recombination process in CH 3 NH 3 PbI 3 layers.…”

Effective Double Electron Transport Layer Inducing Crystallization of Active Layer for Improving the Performance of Organic Solar Cells

“…Many methods, such as designing new device structure, synthesizing new materials, improving manufacturing processes, and interface modification, were used to improve the performance of OSCs. Interface modification plays an important role in the long-term stability and the improvement of the PCE of the device [ 4 , 5 , 6 , 7 ]. Lin et al used WS 2 rather than PEDOT:PSS to modify the interface of a device, and the PCE of the modified device is as high as 17.3% [ 8 ].…”