Highly flexible and solution-processed organic photodiodes and their application to optical luminescent oxygen sensors

Chang Jin Lim; Jin Hoon Kim; Jin Woo Park

doi:10.1016/j.orgel.2018.11.011

Highly flexible and solution-processed organic photodiodes and their application to optical luminescent oxygen sensors

Chang Jin Lim, Jin Hoon Kim, Jin Woo Park

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

We present a solution-processed flexible organic photodiode (f-OPD) with a bulk heterojunction (BHJ) structure based on a blend of poly (3-hexylthiophene-2,5-diyl) and 1-(3-methoxycarbonyl) propyl-1-phenyl[6,6]C₆₁ (P3HT:PCBM). We used Cs₂CO₃-doped polyethyleneimine ethoxylated (d-PEIE) as the electron transport layer (ETL) material, which significantly improved the electron injection properties of the f-OPD. Compared with f-OPDs with conventional ETL materials such as Cs₂CO₃, the external quantum efficiency (EQE) of the d-PEIE-based f-OPD was highly improved. Analytical results showed that the d-PEIE reduced the work function of the cathode, thereby facilitating the efficiency of electron injection from the active layer (AL) to the cathode of the f-OPD. In addition, after 10,000 cycles of tensile bending at a bending radius of 5 mm, the normalized I_D variation (I_D/I_D0) in the d-PEIE-based f-OPD remained above 90%, indicating an excellent device bending stability. Finally, f-OPD-based luminescent oxygen (O₂) sensors were successfully fabricated consisting of a photoluminescent O₂ sensing film, a light source, and an f-OPD. The O₂ sensors based on d-PEIE-based f-OPDs showed the highest photocurrent and O₂ sensitivity in relation to the O₂ concentration compared with O₂ sensors based on f-OPDs with conventional ETL materials.

Original language	English
Pages (from-to)	100-109
Number of pages	10
Journal	Organic Electronics
Volume	65
DOIs	https://doi.org/10.1016/j.orgel.2018.11.011
Publication status	Published - 2019 Feb

Bibliographical note

Funding Information:
This study was funded by National Research Foundation of Korea , the Ministry of Science, ICT & Future Planning (grant number 2018R1A2B6001390 ).

Publisher Copyright:
© 2018 Elsevier B.V.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Biomaterials
Chemistry(all)
Condensed Matter Physics
Materials Chemistry
Electrical and Electronic Engineering

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10.1016/j.orgel.2018.11.011

Cite this

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title = "Highly flexible and solution-processed organic photodiodes and their application to optical luminescent oxygen sensors",

abstract = "We present a solution-processed flexible organic photodiode (f-OPD) with a bulk heterojunction (BHJ) structure based on a blend of poly (3-hexylthiophene-2,5-diyl) and 1-(3-methoxycarbonyl) propyl-1-phenyl[6,6]C61 (P3HT:PCBM). We used Cs2CO3-doped polyethyleneimine ethoxylated (d-PEIE) as the electron transport layer (ETL) material, which significantly improved the electron injection properties of the f-OPD. Compared with f-OPDs with conventional ETL materials such as Cs2CO3, the external quantum efficiency (EQE) of the d-PEIE-based f-OPD was highly improved. Analytical results showed that the d-PEIE reduced the work function of the cathode, thereby facilitating the efficiency of electron injection from the active layer (AL) to the cathode of the f-OPD. In addition, after 10,000 cycles of tensile bending at a bending radius of 5 mm, the normalized ID variation (ID/ID0) in the d-PEIE-based f-OPD remained above 90%, indicating an excellent device bending stability. Finally, f-OPD-based luminescent oxygen (O2) sensors were successfully fabricated consisting of a photoluminescent O2 sensing film, a light source, and an f-OPD. The O2 sensors based on d-PEIE-based f-OPDs showed the highest photocurrent and O2 sensitivity in relation to the O2 concentration compared with O2 sensors based on f-OPDs with conventional ETL materials.",

author = "Lim, {Chang Jin} and Kim, {Jin Hoon} and Park, {Jin Woo}",

note = "Funding Information: This study was funded by National Research Foundation of Korea , the Ministry of Science, ICT & Future Planning (grant number 2018R1A2B6001390 ). Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2019",

month = feb,

doi = "10.1016/j.orgel.2018.11.011",

language = "English",

volume = "65",

pages = "100--109",

journal = "Organic Electronics",

issn = "1566-1199",

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T1 - Highly flexible and solution-processed organic photodiodes and their application to optical luminescent oxygen sensors

AU - Lim, Chang Jin

AU - Kim, Jin Hoon

AU - Park, Jin Woo

N1 - Funding Information: This study was funded by National Research Foundation of Korea , the Ministry of Science, ICT & Future Planning (grant number 2018R1A2B6001390 ). Publisher Copyright: © 2018 Elsevier B.V.

PY - 2019/2

Y1 - 2019/2

N2 - We present a solution-processed flexible organic photodiode (f-OPD) with a bulk heterojunction (BHJ) structure based on a blend of poly (3-hexylthiophene-2,5-diyl) and 1-(3-methoxycarbonyl) propyl-1-phenyl[6,6]C61 (P3HT:PCBM). We used Cs2CO3-doped polyethyleneimine ethoxylated (d-PEIE) as the electron transport layer (ETL) material, which significantly improved the electron injection properties of the f-OPD. Compared with f-OPDs with conventional ETL materials such as Cs2CO3, the external quantum efficiency (EQE) of the d-PEIE-based f-OPD was highly improved. Analytical results showed that the d-PEIE reduced the work function of the cathode, thereby facilitating the efficiency of electron injection from the active layer (AL) to the cathode of the f-OPD. In addition, after 10,000 cycles of tensile bending at a bending radius of 5 mm, the normalized ID variation (ID/ID0) in the d-PEIE-based f-OPD remained above 90%, indicating an excellent device bending stability. Finally, f-OPD-based luminescent oxygen (O2) sensors were successfully fabricated consisting of a photoluminescent O2 sensing film, a light source, and an f-OPD. The O2 sensors based on d-PEIE-based f-OPDs showed the highest photocurrent and O2 sensitivity in relation to the O2 concentration compared with O2 sensors based on f-OPDs with conventional ETL materials.

AB - We present a solution-processed flexible organic photodiode (f-OPD) with a bulk heterojunction (BHJ) structure based on a blend of poly (3-hexylthiophene-2,5-diyl) and 1-(3-methoxycarbonyl) propyl-1-phenyl[6,6]C61 (P3HT:PCBM). We used Cs2CO3-doped polyethyleneimine ethoxylated (d-PEIE) as the electron transport layer (ETL) material, which significantly improved the electron injection properties of the f-OPD. Compared with f-OPDs with conventional ETL materials such as Cs2CO3, the external quantum efficiency (EQE) of the d-PEIE-based f-OPD was highly improved. Analytical results showed that the d-PEIE reduced the work function of the cathode, thereby facilitating the efficiency of electron injection from the active layer (AL) to the cathode of the f-OPD. In addition, after 10,000 cycles of tensile bending at a bending radius of 5 mm, the normalized ID variation (ID/ID0) in the d-PEIE-based f-OPD remained above 90%, indicating an excellent device bending stability. Finally, f-OPD-based luminescent oxygen (O2) sensors were successfully fabricated consisting of a photoluminescent O2 sensing film, a light source, and an f-OPD. The O2 sensors based on d-PEIE-based f-OPDs showed the highest photocurrent and O2 sensitivity in relation to the O2 concentration compared with O2 sensors based on f-OPDs with conventional ETL materials.

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JO - Organic Electronics

JF - Organic Electronics

ER -

Highly flexible and solution-processed organic photodiodes and their application to optical luminescent oxygen sensors

Abstract

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