BibTex format
@article{Hong:2026:10.1002/adfm.202424556,
author = {Hong, E and Tremlett, WDJ and Hart, L and Hu, B and Qiao, Z and Sukpoonprom, P and Fearn, S and Angela, E and Brunetta, M and Koutsogeorgis, DC and Kalfagiannis, N and Nodari, D and Mclachlan, MA and Barnes, PRF and Bakulin, AA and Long, NJ and Gasparini, N},
doi = {10.1002/adfm.202424556},
journal = {Advanced Functional Materials},
title = {Ferrocene derivatives enable ultrasensitive perovskite photodetectors with enhanced reverse bias stability},
url = {http://dx.doi.org/10.1002/adfm.202424556},
volume = {36},
year = {2026}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - Despite the great potential of lead-halide perovskite photodetectors for broadband photodetection, ion migration in perovskites and parasitic charge injection from adjacent layers remain major challenges, ultimately leading to device failure. Here, the novel use of an ultra-thin layer of ferrocenyl-bis-phenyl-2-carboxylate (FcPhc2) is demonstrated as a hole-blocking layer. It is shown that FcPhc2 creates an energetic barrier between the perovskite and the electron transport layer, significantly reducing hole injection from the Ag contact. This improvement results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V and 740 nm. In addition, FcPhc2 effectively inhibits I− oxidation induced by injected holes and reduces formed I2 on the perovskite surface, enhancing reverse bias stability. The increase in detectivity and stability does not compromise the high response speed of FcPhc2-based devices that operate on the scale of 150 ns and 1.3 MHz at −0.5 V in photo- and electrical-responses.
AU - Hong,E
AU - Tremlett,WDJ
AU - Hart,L
AU - Hu,B
AU - Qiao,Z
AU - Sukpoonprom,P
AU - Fearn,S
AU - Angela,E
AU - Brunetta,M
AU - Koutsogeorgis,DC
AU - Kalfagiannis,N
AU - Nodari,D
AU - Mclachlan,MA
AU - Barnes,PRF
AU - Bakulin,AA
AU - Long,NJ
AU - Gasparini,N
DO - 10.1002/adfm.202424556
PY - 2026///
SN - 1616-301X
TI - Ferrocene derivatives enable ultrasensitive perovskite photodetectors with enhanced reverse bias stability
T2 - Advanced Functional Materials
UR - http://dx.doi.org/10.1002/adfm.202424556
UR - https://advanced.onlinelibrary.wiley.com/doi/10.1002/adfm.202424556
VL - 36
ER -
