Effect of Hole Transport Layers on the Performance of Organic Optoelectronic Devices based on PBDB-T:ITIC Bulk Heterojunction

Zhang, Shanshan; Zhang, Xiaohua; Huang, Jiang

doi:10.2991/ame-17.2017.13

Cited by 1 publication

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References 14 publications

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“…Typically, a material suitable for the electron-blocking layer (EBL) needs to have a high LUMO energy level to block the direct electron injection and nice mobility for fast and efficient hole transportation . Typical hole-transporting materials ,− commonly used in OLEDs are suitable EBLs for OPD, leading to good dark current suppression to 10 –9 A cm –2 level. The vacuum-processable EBL should have limited molecular conjugation to give high LUMO and suitable HOMO and sufficient thermal and morphological stability.…”

Section: Introductionmentioning

confidence: 99%

A New Dioxasilepine–Aryldiamine Hybrid Electron-Blocking Material for Wide Linear Dynamic Range and Fast Response Organic Photodetector

Kuo

Estrada

Lee

et al. 2022

ACS Appl. Mater. Interfaces

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A new dioxasilepine and aryldiamine hybrid material DPSi-DBDTA is designed to act as the electron-blocking layer (EBL) for vacuum-processed organic photodetector (OPD). The O–Si–O-linked cyclic structure leads DPSi-DBDTA to have dipolar character, high LUMO, and good thermal and morphology stability suitable for vacuum deposition. An initial trial with C60-based single active layer OPD device manifests the superior capability of DPSi-DBDTA for dark current suppression compared to the typical aryldiamines. Here, the bare and MoO3-doped DPSi-DBDTA is further examined as EBLs for the visible light responsive OPD comprising DTDCPB/C70 bulk heterojunction (BHJ) as the active layer. In sync with the result of C60-based OPD, the low dark current density and high specific detectivity D* (7.085 × 1012 cm Hz1/2 W–1) are achieved. The device with 5% MoO3-doped EBL can exhibit a wide linear dynamic range (LDR) up to 154.166 dB, which is attributed to suppression of both dark current density and carrier recombination. Additionally, the devices also manifest fast time-resolved performance in both frequency and transient response measurements. Especially for the device with 20% MoO3-doped EBL, a wide cutoff frequency response 692.047 kHz and record-high transient response demonstrating ≤0.683 μs for transient photovoltage (TPV) and ≤0.478 μs for transient photocurrent (TPC) have been realized, which is possibly owing to the balance of mobility that mitigates the damage from traps. Such submicrosecond response is comparable with the state-of-the-art perovskite-PDs and Si-PDs.

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Section: Introductionmentioning

confidence: 99%

A New Dioxasilepine–Aryldiamine Hybrid Electron-Blocking Material for Wide Linear Dynamic Range and Fast Response Organic Photodetector

Kuo

Estrada

Lee

et al. 2022

ACS Appl. Mater. Interfaces

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Effect of Hole Transport Layers on the Performance of Organic Optoelectronic Devices based on PBDB-T:ITIC Bulk Heterojunction

Abstract: Abstract. In this work, the organic optoelectronic devices with both photovoltaic and detection performance were fabricated based on a blend of the polymer poly [(2,6-(4,8-bis(5-(2-ethylhexyl)

Cited by 1 publication

References 14 publications

A New Dioxasilepine–Aryldiamine Hybrid Electron-Blocking Material for Wide Linear Dynamic Range and Fast Response Organic Photodetector

A New Dioxasilepine–Aryldiamine Hybrid Electron-Blocking Material for Wide Linear Dynamic Range and Fast Response Organic Photodetector

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