BibTex format
@article{Hong:2026:10.1039/d6ee02958b,
author = {Hong, E and Vanin, F and Tremlett, WDJ and Sukpoonprom, P and Li, S and Liu, Q and Ittisanronnachai, S and Li, L and Qiao, Z and Furlan, F and Nodari, D and Zeng, XC and Pattanasattayavong, P and Bakulin, AA and Long, NJ and Zhu, Z and Gasparini, N},
doi = {10.1039/d6ee02958b},
journal = {Energy Environ Sci},
title = {Holistic design strategy of ferrocene-based interlayers for ultralow-noise perovskite photodetectors and high-efficiency solar cells.},
url = {http://dx.doi.org/10.1039/d6ee02958b},
year = {2026}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - Organometallic ferrocene (Fc)-based interlayers have emerged as effective interfacial modulators for next-generation perovskite optoelectronic devices. The thermally stable Fc core and reversible Fc/Fc+ redox couple, combined with carbonyl linkers, enable strong coordination to halide-related defects and tuneable frontier orbital energies, reducing non-radiative recombination and dark current in perovskite solar cells (PSCs) and perovskite photodetectors (PPDs), respectively. However, previous studies have focused on specific applications separately, resulting in a limited understanding of molecular design principles bridging device operating conditions. Here, we holistically investigate phenyl- and furyl-terminated ester- and ketone-linked Fc interlayers in PSCs and PPDs. By incorporating Fc-derivative interlayers, we demonstrate that the identity of the terminal group critically governs interfacial energetics and thereby directs device performance. Phenyl-based Fc interlayers generate a large potential step at the perovskite surface, as evidenced by a work-function (WF) shift. This creates a localized electrostatic barrier to reverse-biased hole injection, suppressing dark current density (J D) and enhancing the signal-to-noise ratio. In contrast, furyl-based analogs cause a negligible WF shift, leaving the interfacial injection barrier unperturbed. Instead, their illumination-induced band bending promotes balanced charge extraction while passivating surface traps. Electrochemical potential differences associated with ketone- and ester-linkers help explain the respective sub-trends, whereby the former enhance PPD performance, whilst the latter are preferred in photovoltaics. Consequently, PSCs modified with ferrocenyl-bis-furyl-2-carboxylate (F2) achieved state-of-the-art power conversion efficiencies (PCEs), reaching 26.51%, while PPDs modified with ferrocenyl-bis-phenyl-2-ketone (Ph1) attained outstanding specific detectivities, reaching 1.1 × 1013 Jones a
AU - Hong,E
AU - Vanin,F
AU - Tremlett,WDJ
AU - Sukpoonprom,P
AU - Li,S
AU - Liu,Q
AU - Ittisanronnachai,S
AU - Li,L
AU - Qiao,Z
AU - Furlan,F
AU - Nodari,D
AU - Zeng,XC
AU - Pattanasattayavong,P
AU - Bakulin,AA
AU - Long,NJ
AU - Zhu,Z
AU - Gasparini,N
DO - 10.1039/d6ee02958b
PY - 2026///
SN - 1754-5692
TI - Holistic design strategy of ferrocene-based interlayers for ultralow-noise perovskite photodetectors and high-efficiency solar cells.
T2 - Energy Environ Sci
UR - http://dx.doi.org/10.1039/d6ee02958b
UR - https://www.ncbi.nlm.nih.gov/pubmed/42808021
ER -
