Porphyrin Supramolecule as Surface Carrier Modulator Imparts Hole Transporter with Enhanced Mobility for Perovskite Photovoltaics

Abstract

Modulating the surface charge transport behavior of hole transport materials (HTMs) would be as an potential approach to improve their hole mobility, while yet realized for fabricating efficient photovoltaic devices. Here, an oxygen bridged dimer‐based monoamine FeIII porphyrin supramolecule is prepared and doped in HTM film. Theoretical analyses reveal that the polaron distributed on dimer can be coupled with the parallel arranged polarons on adjacent dimers. This polaron coupling at the interface of supramolecule and HTM can resonates with hole flux to increase hole transport efficiency. Mobility tests reveal that the hole mobility of doped HTM film is improved by 8‐fold. Doped perovskite device exhibits an increased efficiency from 19.8 % to 23.2 %, and greatly improved stability. This work provides a new strategy to improve the mobility of HTMs by surface carrier modulation, therefore fabricating efficient photovoltaic devices.

Carbon Dioxide Adsorption within Porous Porphyrin Networks

“…9 Porphyrins are extensively explored in various applications, including catalysis, 10 sensing, 11 and photovoltaics. 12 It is predicted that incorporating porphyrin into COFs offers a path to introduce functionalities that can be tuned to enhance CO 2 sorption performance. 13 Herein, we evaluate the CO 2 sorption capacity of thin polymeric films containing porphyrin-based covalent organic frameworks (MPOR-COFs, where M= H 2 , Cu 2+ , Zn 2+ ), synthesized via a bottom-up vapor-phase oxidative polymer-ization technique.…”

“…Among COFs, porphyrin-based COFs have garnered significant attention because of the high affinity of porphyrin units for CO 2 molecules . Porphyrins are extensively explored in various applications, including catalysis, sensing, and photovoltaics . It is predicted that incorporating porphyrin into COFs offers a path to introduce functionalities that can be tuned to enhance CO 2 sorption performance …”