Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

High-performance organic photodetectors enabled by a refined fibrillar multiphase morphology

Journal Article · · Chemical Engineering Journal
 [1];  [1];  [2];  [1];  [2];  [3];  [2];  [1];  [1]
  1. South China University of Technology (SCUT), Guangzhou (China); South China Institute of Collaborative Innovation, Dongguan (China)
  2. Shanghai Jiao Tong University (China)
  3. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
Film morphology of donor:acceptor blend layers plays a critical role in photon-to-current efficiency and dark/noise current of organic photodetectors (OPDs). One effective approach to manipulate crystallization and mesoscale phase separation of such blend layers is sequential casting (SC). However, the guiding strategies to control the morphology and the impacts on OPD performance of the SC films remain elusive, as the film structural evolution during SC is different from conventional blend casting (BC). In this report a refined fibrillar multiphase morphology is demonstrated by SC in an NT812:IEICO-4F blend film, where the high-quality IEICO-4F crystallites infiltrate the robust NT812 fibril network from the surface to the bulk. Such a morphology leads to improved charge generation and collection, reduced trap states, and enhanced charge block capability of resultant device, enabling simultaneous achievement of high external quantum efficiency and low dark/noise current. A maximum special detectivity of 5 × 1013 Jones is achieved at 860 nm under –0.1 V, which is among the highest detectivities for vis-to-NIR OPDs. The linear dynamic range and response speed are also improved. Such enhancements are parallelly observed from OPD devices based on other blend systems with similar fibrillar refinement, which provides guidelines for film structure manipulation towards high OPD performance.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
China Postdoctoral Science Foundation; Dongguan Innovative Research Team Program; National Natural Science Foundation of China; Natural Science Foundation of Guangdong Province; USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
2278643
Alternate ID(s):
OSTI ID: 1961494
Journal Information:
Chemical Engineering Journal, Journal Name: Chemical Engineering Journal Vol. 452; ISSN 1385-8947
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (68)

Self‐Powered Organic Photodetectors with High Detectivity for Near Infrared Light Detection Enabled by Dark Current Reduction journal September 2021
Organic Field-Effect Transistors based on Highly Ordered Single Polymer Fibers journal December 2011
High-Efficiency Photovoltaic Devices using Trap-Controlled Quantum-Dot Ink prepared via Phase-Transfer Exchange journal March 2017
Organic Photodetectors for Next‐Generation Wearable Electronics journal August 2019
Aggregation‐Induced Multilength Scaled Morphology Enabling 11.76% Efficiency in All‐Polymer Solar Cells Using Printing Fabrication journal August 2019
A High‐Performance Solution‐Processed Organic Photodetector for Near‐Infrared Sensing journal November 2019
Miniaturized VIS‐NIR Spectrometers Based on Narrowband and Tunable Transmission Cavity Organic Photodetectors with Ultrahigh Specific Detectivity above 10 14 Jones journal September 2021
Decoupling Complex Multi‐Length‐Scale Morphology in Non‐Fullerene Photovoltaics with Nitrogen K‐Edge Resonant Soft X‐ray Scattering journal December 2021
From p‐ to n‐Type Mixed Conduction in Isoindigo‐Based Polymers through Molecular Design journal February 2022
Theory‐Guided Material Design Enabling High‐Performance Multifunctional Semitransparent Organic Photovoltaics without Optical Modulations journal March 2022
Visible and Near-Infrared Imaging with Nonfullerene-Based Photodetectors journal June 2018
Spray-Coated Organic Photodetectors and Image Sensors with Silicon-Like Performance journal October 2018
Development of Organic Semiconductor Photodetectors: From Mechanism to Applications journal September 2018
Highly Sensitive UV–Vis‐to‐Near‐Infrared Organic Photodetectors Employing ZnO: Polyethylenimine Ethoxylated Composite as Hole‐Blocking Layer journal January 2022
All‐Polymer High‐Performance Photodetector through Lamination journal January 2020
Inorganic CsPbI 3 Perovskite Coating on PbS Quantum Dot for Highly Efficient and Stable Infrared Light Converting Solar Cells journal October 2017
Bandgap Narrowing in Non-Fullerene Acceptors: Single Atom Substitution Leads to High Optoelectronic Response Beyond 1000 nm journal June 2018
Design of Near‐Infrared Nonfullerene Acceptor with Ultralow Nonradiative Voltage Loss for High‐Performance Semitransparent Ternary Organic Solar Cells journal January 2022
The structure-performance correlation of bulk-heterojunction organic solar cells with multi-length-scale morphology journal June 2022
Ternary organic photodiodes with spectral response from 300 to 1200 nm for spectrometer application journal April 2021
Hybrid organolead halide perovskite microwire arrays/single CdSe nanobelt for a high-performance photodetector journal February 2021
Employing liquid crystal material as regulator to enhance performance of photomultiplication type polymer photodetectors journal January 2022
Efficient organic solar cells with small energy losses based on a wide-bandgap trialkylsilyl-substituted donor polymer and a non-fullerene acceptor journal May 2022
Highly sensitive photomultiplication type polymer photodetectors by manipulating interfacial trapped electron density journal May 2022
Single-Junction Organic Solar Cell with over 15% Efficiency Using Fused-Ring Acceptor with Electron-Deficient Core journal April 2019
High efficiency organic solar cells based on amorphous electron-donating polymer and modified fullerene acceptor journal September 2017
Achieving efficient organic solar cells and broadband photodetectors via simple compositional tuning of ternary blends journal September 2019
Ternary organic solar cells offer 14% power conversion efficiency journal December 2017
Enhanced Photovoltaic Performance of Ternary Polymer Solar Cells by Incorporation of a Narrow-Bandgap Nonfullerene Acceptor journal September 2017
Exploration of Near-Infrared Organic Photodetectors journal June 2019
Ultra-Narrow-Band NIR Photomultiplication Organic Photodetectors Based on Charge Injection Narrowing journal March 2021
Photomultiplication Type Broad Response Organic Photodetectors with One Absorber Layer and One Multiplication Layer journal December 2019
Organic Bulk Heterojunction Infrared Photodiodes for Imaging Out to 1300 nm journal April 2019
High-Detectivity Non-Fullerene Organic Photodetectors Enabled by a Cross-Linkable Electron Blocking Layer journal September 2020
Copper Thiocyanate as an Anode Interfacial Layer for Efficient Near-Infrared Organic Photodetector journal December 2020
Effective Dark Current Suppression for High-Detectivity Organic Near-Infrared Photodetectors Using a Non-Fullerene Acceptor journal February 2021
A New Dioxasilepine–Aryldiamine Hybrid Electron-Blocking Material for Wide Linear Dynamic Range and Fast Response Organic Photodetector journal April 2022
Dark Current Reduction Strategy via a Layer-By-Layer Solution Process for a High-Performance All-Polymer Photodetector journal January 2019
Highly Ordered Semiconducting Polymer Arrays for Sensitive Photodetectors journal April 2019
High-Performance All-Polymer Photodetectors via a Thick Photoactive Layer Strategy journal March 2019
Side-Chain Engineering of Nonfullerene Acceptors for Near-Infrared Organic Photodetectors and Photovoltaics journal May 2019
Simultaneously Improved Efficiency and Stability in All-Polymer Solar Cells by a P–i–N Architecture journal August 2019
Design of All-Fused-Ring Nonfullerene Acceptor for Highly Sensitive Self-Powered Near-Infrared Organic Photodetectors journal April 2022
Relating Chemical Structure to Device Performance via Morphology Control in Diketopyrrolopyrrole-Based Low Band Gap Polymers journal December 2013
Universal Correlation between Fibril Width and Quantum Efficiency in Diketopyrrolopyrrole-Based Polymer Solar Cells journal December 2013
Carbon-Bridged 1,2-Bis(2-thienyl)ethylene: An Extremely Electron Rich Dithiophene Building Block Enabling Electron Acceptors with Absorption above 1000 nm for Highly Sensitive NIR Photodetectors journal March 2021
Sensitivity of the Mott–Schottky Analysis in Organic Solar Cells journal March 2012
Dependence of Regioregular Poly(3-hexylthiophene) Film Morphology and Field-Effect Mobility on Molecular Weight journal April 2005
A real-time study of the benefits of co-solvents in polymer solar cell processing journal February 2015
The influence of molecular orientation on organic bulk heterojunction solar cells journal April 2014
Optimized active layer morphology toward efficient and polymer batch insensitive organic solar cells journal June 2020
Reverse dark current in organic photodetectors and the major role of traps as source of noise journal January 2021
Integrated near-infrared spectral sensing journal January 2022
Investigating charge dynamics in halide perovskite-sensitized mesostructured solar cells journal January 2014
Organic photodiodes and phototransistors toward infrared detection: materials, devices, and applications journal January 2020
Photomultiplication type organic photodetectors based on electron tunneling injection journal January 2020
All-polymer photodetectors with photomultiplication journal January 2019
Broadband organic photodetectors based on ternary blend active layers with enhanced and spectrally flat response journal January 2020
Manipulating the solubility properties of polymer donors for high-performance layer-by-layer processed organic solar cells journal January 2021
Organic photodetectors with high detectivity for broadband detection covering UV-vis-NIR journal January 2022
Lateral organic bilayer heterojunction photoconductors journal August 2008
Understanding Mott-Schottky Measurements under Illumination in Organic Bulk Heterojunction Solar Cells journal March 2017
Near-infrared and visible light dual-mode organic photodetectors journal January 2020
Low trap-state density and long carrier diffusion in organolead trihalide perovskite single crystals journal January 2015
Organic and solution-processed tandem solar cells with 17.3% efficiency journal August 2018
Large-area low-noise flexible organic photodiodes for detecting faint visible light journal November 2020
Calculation of the Kramers-Kronig transform of X-ray spectra by a piecewise Laurent polynomial method journal January 2014
Design Rules of the Mixing Phase and Impacts on Device Performance in High-Efficiency Organic Photovoltaics journal January 2022