Publication

Polyacrylonitrile-grafted reduced graphene oxide hybrid: An all-round and efficient hole-extraction material for organic and inorganic-organic hybrid photovoltaics

조회수 : 118 등록일 : 2017.04.26 00:00

저자 : Shin, K (Shin, Kwanwoo)
출처 : NANO ENERGY
출판일 : 2017.04.26
 
 
Polyacrylonitrile-grafted reduced graphene oxide hybrid: An all-round and efficient hole-extraction material for organic and inorganic-organic hybrid photovoltaics
 
 
Jung, CH (Jung, Chan-Hee)[ 1,3 ] ; Noh, YJ (Noh, Yong-Jin)[ 2 ] ; Bae, JH (Bae, Jun-Ho)[ 2 ] ; Yu, JH (Yu, Jai-Hoon)[ 2 ] ; Hwang, IT (Hwang, In-Tae)[ 1 ] ; Shin, J (Shin, Junhwa)[ 1 ] ; Shin, K (Shin, Kwanwoo)[ 5,6 ] ; Lee, JS (Lee, Jae-Suk)[ 3 ] ; Choi, JH (Choi, Jae-Hak)[ 4 ] ; Na, SI (Na, Seok-In)[ 2 ]
 
 
[ 1 ] Korea Atom Energy Res Inst, Res Div Ind & Environm, 29 Geumgu Gil, Jeongeup Si 580185, Jeollabuk Do, South Korea
[ 2 ] Chonbuk Natl Univ, Profess Grad Sch Flexible & Printed Elect, Polymer Mat Fus Res Ctr, 567 Baekje Daero, Jeonju Si 561756, Jeollabuk Do, South Korea
[ 3 ] Gwangju Inst Sci & Technol, Sch Mat Sci & Engn, 123 Cheomdangwagi Ro, Gwangju 500712, South Korea
[ 4 ] Chungnam Natl Univ, Dept Polymer Sci & Engn, 99 Daehak Ro, Daejeon 305764, South Korea
[ 5 ] Sogang Univ, Dept Chem, 35 Baekbeom Ro, Seoul 121742, South Korea
[ 6 ] Sogang Univ, Inst Biol Inte Rfaces, 35 Baekbeom Ro, Seoul 121742, South Korea
 
 

In this research, we demonstrate that aliphatic polyacrylonitrile-grafted reduced graphene oxide (PRGO) hybrid can function efficiently as an all-round hole-extraction layer (HEL) in organic and organic-inorganic hybrid perovskite photovoltaic devices (OPVs and PePVs). The hybrid-structure PRGO was developed by facile and scalable in-situ radiation-induced reduction and graft polymerization with polymerizable styryl-functionalized graphene oxide and acrylonitrile. The newly developed PRGO exhibits long-term dispersion stability of six months even up to the high concentration of 10 mg/ml. It also shows a full-cover uniform thin-film morphology, good electrical conductivity (0.87 S/cm), high work function (4.87 eV), and excellent weather stability. Moreover, the incorporation of PRGO (as a HEL) into the OPVs and PePVs results in greater efficiency than chemically-converted graphene nanoflakes references, and device durability superior to poly(ethylenedioxythiophene):poly(styrene sulfonate)-based ones with comparable power conversion efficiencies. Noticeably, our finding demonstrates that the hybrid-structure PRGO provides an all-round and efficient hole-extraction material for use in various conjugated-polymer and perovskite-based PV systems.
 
 
 
http://www.sciencedirect.com/science/article/pii/S2211285516304864
 
 
 
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