Broadband photomultiplication-type polymer photodetectors and its application in light-controlled circuit
Abstract Photomultiplication-type polymer photodetectors (PM-PPDs) were achieved with polymer P3HT as donor and PY3Se-1V as acceptor based on structure of ITO/PEDOT:PSS/active layer/Al. The optimal weight ratio of P3HT to PY3Se-1V is about 100:3. Amounts of isolated electron traps are formed with PY3Se-1V surrounded by P3HT due to rather less content of PY3Se-1V in active layers and about 0.94 eV energy offset between the lowest unoccupied molecular orbitals (LUMO) of P3HT and PY3Se-1V. The optimal PM-PPDs exhibit broad spectral response from 350 to 950 nm and external quantum efficiency (EQE) values of 68,200% at 360 nm, 26,400% at 630 nm and 19,500% at 850 nm under −15 V bias. The working mechanism of PM-PPDs is attributed to the interfacial trap-assisted hole tunneling injection from external circuit. The performance of PM-PPDs can be further improved by incorporating appropriate PMBBDT with high hole mobility as the third component. The EQE values of optimal ternary PM-PPDs are increased to 105,000% at 360 nm, 40,000% at 630 nm and 31,800% at 850 nm under −15 V bias, benefiting from the enhanced hole transport in ternary active layers. The optimal ternary PM-PPDs were successfully applied in a light-controlled circuit to turn on or turn off light emitting diode (LED)..
| Medienart: |
Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:65 |
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| Enthalten in: |
Science China / Chemistry - 65(2022), 8 vom: 13. Juli, Seite 1642-1649 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Liu, Ming [VerfasserIn] |
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| Links: |
Volltext [lizenzpflichtig] |
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| BKL: |
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| Anmerkungen: |
© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2022 |
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| doi: |
10.1007/s11426-022-1296-2 |
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| funding: |
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OLC2131559445 |
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| 520 | |a Abstract Photomultiplication-type polymer photodetectors (PM-PPDs) were achieved with polymer P3HT as donor and PY3Se-1V as acceptor based on structure of ITO/PEDOT:PSS/active layer/Al. The optimal weight ratio of P3HT to PY3Se-1V is about 100:3. Amounts of isolated electron traps are formed with PY3Se-1V surrounded by P3HT due to rather less content of PY3Se-1V in active layers and about 0.94 eV energy offset between the lowest unoccupied molecular orbitals (LUMO) of P3HT and PY3Se-1V. The optimal PM-PPDs exhibit broad spectral response from 350 to 950 nm and external quantum efficiency (EQE) values of 68,200% at 360 nm, 26,400% at 630 nm and 19,500% at 850 nm under −15 V bias. The working mechanism of PM-PPDs is attributed to the interfacial trap-assisted hole tunneling injection from external circuit. The performance of PM-PPDs can be further improved by incorporating appropriate PMBBDT with high hole mobility as the third component. The EQE values of optimal ternary PM-PPDs are increased to 105,000% at 360 nm, 40,000% at 630 nm and 31,800% at 850 nm under −15 V bias, benefiting from the enhanced hole transport in ternary active layers. The optimal ternary PM-PPDs were successfully applied in a light-controlled circuit to turn on or turn off light emitting diode (LED). | ||
| 700 | 1 | |a Fan, Qunping |4 aut | |
| 700 | 1 | |a Yang, Kaixuan |4 aut | |
| 700 | 1 | |a Zhao, Zijin |4 aut | |
| 700 | 1 | |a Zhao, Xingchao |4 aut | |
| 700 | 1 | |a Zhou, Zhengji |4 aut | |
| 700 | 1 | |a Zhang, Jian |4 aut | |
| 700 | 1 | |a Lin, Francis |4 aut | |
| 700 | 1 | |a Jen, Alex K.-Y. |4 aut | |
| 700 | 1 | |a Zhang, Fujun |4 aut | |
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