Effect of Conductive Polymers PEDOT:PSS on Exciton Recombination and Conversion in Doped-Type BioLEDs
Although the effect of the conductive polymers PEDOT:PSS on the electroluminescence performance of doped-type organic light-emitting diodes (OLEDs) has been studied, the process of PEDOT:PSS regulation of exciton recombination region and concentration within the deoxyribonucleic acid (DNA)-based dop...
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MDPI AG
2023-08-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/15/3275 |
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| author | Jiayi Song Yunxia Guan Cheng Wang Wanjiao Li Xi Bao Lianbin Niu |
| author_facet | Jiayi Song Yunxia Guan Cheng Wang Wanjiao Li Xi Bao Lianbin Niu |
| author_sort | Jiayi Song |
| collection | DOAJ |
| description | Although the effect of the conductive polymers PEDOT:PSS on the electroluminescence performance of doped-type organic light-emitting diodes (OLEDs) has been studied, the process of PEDOT:PSS regulation of exciton recombination region and concentration within the deoxyribonucleic acid (DNA)-based doped-type BioLEDs is still obscure. In this study, we fabricated Bio-devices with and without PEDOT:PSS using varying spin-coating speeds of PEDOT:PSS. The Alq<sub>3</sub>:Rubrene-based BioLEDs achieve higher luminance (44,010 cd/m<sup>2</sup>) and higher luminance efficiency (8.1 cd/A), which are increased by 186% and 478%, respectively, compared to the reference BioLEDs without PEDOT:PSS. Similarly, the maximum luminance and efficiency of blue TCTA:TPBi exciplex-type BioLEDs are increased by 224% and 464%. In particular, our findings reveal that with an increasing thickness of PEDOT:PSS, the region of exciton recombination shifts towards the interface between the emitting layer (EML) and the hole transport layer (HTL). Meanwhile, the concentration of singlet exciton (S<sub>1,Rub</sub>) and triplet exciton (T<sub>1,Rub</sub>) increases, and the triplet-triplet annihilation (TTA) process is enhanced, resulting in the enhanced luminescence and efficiency of the devices. Accordingly, we provide a possible idea for achieving high performance doped-type BioLEDs by adding conductive polymers PEDOT:PSS, and revealing the effect of exciton recombination and conversion in BioLEDs given different PEDOT:PSS thicknesses. |
| first_indexed | 2024-03-11T00:18:05Z |
| format | Article |
| id | doaj.art-1357d1cdbca9471e8b4d575c9fa19959 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T00:18:05Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-1357d1cdbca9471e8b4d575c9fa199592023-11-18T23:28:55ZengMDPI AGPolymers2073-43602023-08-011515327510.3390/polym15153275Effect of Conductive Polymers PEDOT:PSS on Exciton Recombination and Conversion in Doped-Type BioLEDsJiayi Song0Yunxia Guan1Cheng Wang2Wanjiao Li3Xi Bao4Lianbin Niu5College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, ChinaCollege of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, ChinaCollege of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, ChinaCollege of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, ChinaCollege of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, ChinaCollege of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, ChinaAlthough the effect of the conductive polymers PEDOT:PSS on the electroluminescence performance of doped-type organic light-emitting diodes (OLEDs) has been studied, the process of PEDOT:PSS regulation of exciton recombination region and concentration within the deoxyribonucleic acid (DNA)-based doped-type BioLEDs is still obscure. In this study, we fabricated Bio-devices with and without PEDOT:PSS using varying spin-coating speeds of PEDOT:PSS. The Alq<sub>3</sub>:Rubrene-based BioLEDs achieve higher luminance (44,010 cd/m<sup>2</sup>) and higher luminance efficiency (8.1 cd/A), which are increased by 186% and 478%, respectively, compared to the reference BioLEDs without PEDOT:PSS. Similarly, the maximum luminance and efficiency of blue TCTA:TPBi exciplex-type BioLEDs are increased by 224% and 464%. In particular, our findings reveal that with an increasing thickness of PEDOT:PSS, the region of exciton recombination shifts towards the interface between the emitting layer (EML) and the hole transport layer (HTL). Meanwhile, the concentration of singlet exciton (S<sub>1,Rub</sub>) and triplet exciton (T<sub>1,Rub</sub>) increases, and the triplet-triplet annihilation (TTA) process is enhanced, resulting in the enhanced luminescence and efficiency of the devices. Accordingly, we provide a possible idea for achieving high performance doped-type BioLEDs by adding conductive polymers PEDOT:PSS, and revealing the effect of exciton recombination and conversion in BioLEDs given different PEDOT:PSS thicknesses.https://www.mdpi.com/2073-4360/15/15/3275organic light emitting diodeexciplexconductive polymersenergy transferluminance efficiencyhole injection layer |
| spellingShingle | Jiayi Song Yunxia Guan Cheng Wang Wanjiao Li Xi Bao Lianbin Niu Effect of Conductive Polymers PEDOT:PSS on Exciton Recombination and Conversion in Doped-Type BioLEDs Polymers organic light emitting diode exciplex conductive polymers energy transfer luminance efficiency hole injection layer |
| title | Effect of Conductive Polymers PEDOT:PSS on Exciton Recombination and Conversion in Doped-Type BioLEDs |
| title_full | Effect of Conductive Polymers PEDOT:PSS on Exciton Recombination and Conversion in Doped-Type BioLEDs |
| title_fullStr | Effect of Conductive Polymers PEDOT:PSS on Exciton Recombination and Conversion in Doped-Type BioLEDs |
| title_full_unstemmed | Effect of Conductive Polymers PEDOT:PSS on Exciton Recombination and Conversion in Doped-Type BioLEDs |
| title_short | Effect of Conductive Polymers PEDOT:PSS on Exciton Recombination and Conversion in Doped-Type BioLEDs |
| title_sort | effect of conductive polymers pedot pss on exciton recombination and conversion in doped type bioleds |
| topic | organic light emitting diode exciplex conductive polymers energy transfer luminance efficiency hole injection layer |
| url | https://www.mdpi.com/2073-4360/15/15/3275 |
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