Superior Noise Suppression, Response Time, and Device Stability of Non-Fullerene System over Fullerene Counterpart in Organic Photodiode

被引：67

作者：

Jang, Woongsik ^{[1
]}

Rasool, Shafket ^{[2
]}

Kim, Byung Gi ^{[1
]}

Kim, Jehan ^{[3
]}

Yoon, Jinhwan ^{[4
]}

Manzhos, Sergei ^{[5
]}

Lee, Hang Ken ^{[2
]}

Jeon, Il ^{[4
,6
]}

Wang, Dong Hwan ^{[1
]}

机构：

[1] Chung Ang Univ, Sch Integrat Engn, 84 Heukseok Ro, Seoul 06974, South Korea

[2] Korea Res Inst Chem Technol KRICT, Energy Mat Res Ctr, 141 Gajeong Ro, Daejeon 34114, South Korea

[3] Pohang Univ Sci & Technol POSTECH, Pohang Accelerator Lab PAL, Pohang 790784, South Korea

[4] Pusan Natl Univ, Grad Sch Chem Mat, Inst Plast Informat & Energy Mat, Dept Chem Educ, 2 Busandaehak Ro 63beon Gil, Busan 46241, South Korea

[5] Inst Natl Rech Sci, Ctr Energie Mat Telecommun, 1650 Blvd Lionel Boulet, Varennes, PQ J3X 1S2, Canada

[6] Univ Tokyo, Dept Mech Engn, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan

来源：

ADVANCED FUNCTIONAL MATERIALS | 2020年 / 30卷 / 45期

基金：

新加坡国家研究基金会;

关键词：

noise suppression; non-fullerene acceptors; organic photodiodes; response time; stability; SOLAR-CELLS; SPECTRAL RESPONSE; PHOTODETECTORS; ACCEPTORS; PHOTOVOLTAICS; MORPHOLOGY; TRANSPORT; EMISSION; POLYMERS; LAYER;

D O I：

10.1002/adfm.202001402

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Herein, non-fullerene acceptor-based organic photodiodes are compared with fullerene acceptor-based organic photodiodes. The non-fullerene acceptor, ethylhexyl-rhodanine-benzothiadiazole-coupled indacenodithiophene (eh-IDTBR)-based organic photodiodes show a higher detectivity (1.61x10(13) cm Hz(1/2)W(-1)) and a faster response time (approximate to 2.7 mu s) than the fullerene acceptor, [6,6]-phenyl C(71)butyric acid methyl ester (PC71BM)-based organic photodiodes (3.25x10(12) cm Hz(1/2)W(-1)and approximate to 6.24 mu s, respectively) owing to the excellent dark current suppression of the carrier injection and the low trap density ofeh-IDTBR. Moreover, theeh-IDTBR-based photodetector shows better operational device stability than the fullerene counterpart under electrical and thermal stress. This is corroborated by the morphology and crystallography analyses, both of which reveal that theeh-IDTBR-containing photo-sensitive films remain intact after imposing an external stress. This study elucidates important key advantages of the non-fullerene acceptor,eh-IDTBR, and sets a milestone as it compares the non-fullerene acceptors and fullerene acceptors in organic photodiodes for the first time. This work sets a new record for the performance and stability of solution-processable non-fullerene acceptor-based organic photodiodes.

引用

页数：12

共 70 条

[1] The calculations of excited-state properties with Time-Dependent Density Functional Theory [J].