@article{Park:2023:10.1002/adma.202306655,
author = {Park, SY and Labanti, C and Pacalaj, RA and Lee, TH and Dong, Y and Chin, Y-C and Luke, J and Ryu, G and Minami, D and Yun, S and Park, J-I and Fang, F and Park, K-B and Durrant, JR and Kim, J-S},
doi = {10.1002/adma.202306655},
journal = {Advanced Materials},
title = {The state-of-the-art solution-processed single component organic photodetectors achieved by strong quenching of intermolecular emissive state and high quadrupole moment in non-fullerene acceptors},
url = {http://dx.doi.org/10.1002/adma.202306655},
volume = {35},
year = {2023}
}

Download

TY  - JOUR
AB  - A bulk-heterojunction (BHJ) blend is commonly used as the photoactive layer in organic photodetectors (OPDs) to utilize the donor (D)/acceptor (A) interfacial energetic offset for exciton dissociation. However, this strategy often complicates optimization procedures, raising serious concerns over device processability, reproducibility, and stability. Herein, highly efficient OPDs fabricated with single-component organic semiconductors are demonstrated via solution-processing. The non-fullerene acceptors (NFAs) with strong intrinsic D/A character are used as the photoactive layer, where the emissive intermolecular charge transfer excitonic (CTE) states are formed within <1 ps, and efficient photocurrent generation is achieved via strong quenching of these CTE states by reverse bias. Y6 and IT-4F-based OPDs show excellent OPD performances, low dark current density (≈10-9 A cm-2 ), high responsivity (≥0.15 A W-1 ), high specific detectivity (>1012 Jones), and fast photo-response time (<10 µs), comparable to the state-of-the-art BHJ OPDs. Together with strong CTE state quenching by electric field, these excellent OPD performances are also attributed to the high quadrupole moments of NFA molecules, which can lead to large interfacial energetic offset for efficient CTE dissociation. This work opens a new way to realize efficient OPDs using single-component systems via solution-processing and provides important molecular design rules.
AU  - Park,SY
AU  - Labanti,C
AU  - Pacalaj,RA
AU  - Lee,TH
AU  - Dong,Y
AU  - Chin,Y-C
AU  - Luke,J
AU  - Ryu,G
AU  - Minami,D
AU  - Yun,S
AU  - Park,J-I
AU  - Fang,F
AU  - Park,K-B
AU  - Durrant,JR
AU  - Kim,J-S
DO  - 10.1002/adma.202306655
PY  - 2023///
SN  - 0935-9648
TI  - The state-of-the-art solution-processed single component organic photodetectors achieved by strong quenching of intermolecular emissive state and high quadrupole moment in non-fullerene acceptors
T2  - Advanced Materials
UR  - http://dx.doi.org/10.1002/adma.202306655
UR  - https://www.ncbi.nlm.nih.gov/pubmed/37670609
UR  - https://onlinelibrary.wiley.com/doi/10.1002/adma.202306655
UR  - http://hdl.handle.net/10044/1/107987
VL  - 35
ER  - 

Download