Understanding the enhancement of responsitivity in perovskite/organic semiconductor bilayer-structured photodetectors

Yu Liu; Huan Wei; Jing Guo; Ping An Chen; Supeng Liu; Jie Li; Lili Miao; Nana Wang; Zhuojun Chen; Jianpu Wang; Huajie Chen; Yuanyuan Hu

doi:10.1016/j.orgel.2019.07.030

Understanding the enhancement of responsitivity in perovskite/organic semiconductor bilayer-structured photodetectors

Yu Liu, Huan Wei, Jing Guo, Ping An Chen, Supeng Liu, Jie Li, Lili Miao, Nana Wang, Zhuojun Chen, Jianpu Wang, Huajie Chen, Yuanyuan Hu

SCHOOL OF FLEXIBLE ELECTRONICS(FUTURE TECHNOLOGIES)|INSTITUTE OF ADVANCED MATERIALS(IAM)

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

17 Scopus citations

Abstract

Responsitivity is an important figure of merit for photodetectors. Here we demonstrated a simple yet efficient way to enhance the responsitivity of methylammonium lead iodide (MAPbI₃)-based photodetectors by utilizing organic semiconductors (OSCs) to form MAPbI₃/OSC bilayer structures. These bilayer photodetectors are fabricated with a facile and low-cost spin-coating method, yet the responsitivity can be more than one order of magnitude higher than that of pristine MAPbI₃ photodetectors. More importantly, the physics behind the enhancement of responsitivity was analyzed and revealed by inspecting the physical processes in terms of light absorption, exciton dissociation and charge transport. The results indicate that the responsitivity enhancement is mainly attributable to the more efficient exciton dissociation and hole transport processes in the bilayer photodetectors.

Original language	English
Article number	105372
Journal	Organic Electronics
Volume	75
DOIs	https://doi.org/10.1016/j.orgel.2019.07.030
State	Published - Dec 2019

Keywords

Device physics
Organic semiconductors
Perovskite
Photodetector
Responsitivity

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10.1016/j.orgel.2019.07.030

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title = "Understanding the enhancement of responsitivity in perovskite/organic semiconductor bilayer-structured photodetectors",

abstract = "Responsitivity is an important figure of merit for photodetectors. Here we demonstrated a simple yet efficient way to enhance the responsitivity of methylammonium lead iodide (MAPbI3)-based photodetectors by utilizing organic semiconductors (OSCs) to form MAPbI3/OSC bilayer structures. These bilayer photodetectors are fabricated with a facile and low-cost spin-coating method, yet the responsitivity can be more than one order of magnitude higher than that of pristine MAPbI3 photodetectors. More importantly, the physics behind the enhancement of responsitivity was analyzed and revealed by inspecting the physical processes in terms of light absorption, exciton dissociation and charge transport. The results indicate that the responsitivity enhancement is mainly attributable to the more efficient exciton dissociation and hole transport processes in the bilayer photodetectors.",

keywords = "Device physics, Organic semiconductors, Perovskite, Photodetector, Responsitivity",

author = "Yu Liu and Huan Wei and Jing Guo and Chen, {Ping An} and Supeng Liu and Jie Li and Lili Miao and Nana Wang and Zhuojun Chen and Jianpu Wang and Huajie Chen and Yuanyuan Hu",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = dec,

doi = "10.1016/j.orgel.2019.07.030",

language = "英语",

volume = "75",

journal = "Organic Electronics",

issn = "1566-1199",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Understanding the enhancement of responsitivity in perovskite/organic semiconductor bilayer-structured photodetectors

AU - Liu, Yu

AU - Wei, Huan

AU - Guo, Jing

AU - Chen, Ping An

AU - Liu, Supeng

AU - Li, Jie

AU - Miao, Lili

AU - Wang, Nana

AU - Chen, Zhuojun

AU - Wang, Jianpu

AU - Chen, Huajie

AU - Hu, Yuanyuan

PY - 2019/12

Y1 - 2019/12

N2 - Responsitivity is an important figure of merit for photodetectors. Here we demonstrated a simple yet efficient way to enhance the responsitivity of methylammonium lead iodide (MAPbI3)-based photodetectors by utilizing organic semiconductors (OSCs) to form MAPbI3/OSC bilayer structures. These bilayer photodetectors are fabricated with a facile and low-cost spin-coating method, yet the responsitivity can be more than one order of magnitude higher than that of pristine MAPbI3 photodetectors. More importantly, the physics behind the enhancement of responsitivity was analyzed and revealed by inspecting the physical processes in terms of light absorption, exciton dissociation and charge transport. The results indicate that the responsitivity enhancement is mainly attributable to the more efficient exciton dissociation and hole transport processes in the bilayer photodetectors.

AB - Responsitivity is an important figure of merit for photodetectors. Here we demonstrated a simple yet efficient way to enhance the responsitivity of methylammonium lead iodide (MAPbI3)-based photodetectors by utilizing organic semiconductors (OSCs) to form MAPbI3/OSC bilayer structures. These bilayer photodetectors are fabricated with a facile and low-cost spin-coating method, yet the responsitivity can be more than one order of magnitude higher than that of pristine MAPbI3 photodetectors. More importantly, the physics behind the enhancement of responsitivity was analyzed and revealed by inspecting the physical processes in terms of light absorption, exciton dissociation and charge transport. The results indicate that the responsitivity enhancement is mainly attributable to the more efficient exciton dissociation and hole transport processes in the bilayer photodetectors.

KW - Device physics

KW - Organic semiconductors

KW - Perovskite

KW - Photodetector

KW - Responsitivity

UR - http://www.scopus.com/inward/record.url?scp=85069724115&partnerID=8YFLogxK

U2 - 10.1016/j.orgel.2019.07.030

DO - 10.1016/j.orgel.2019.07.030

M3 - 文章

AN - SCOPUS:85069724115

SN - 1566-1199

VL - 75

JO - Organic Electronics

JF - Organic Electronics

M1 - 105372

ER -

Understanding the enhancement of responsitivity in perovskite/organic semiconductor bilayer-structured photodetectors

Abstract

Keywords

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