TY - JOUR
T1 - Environmentally friendly preparation of nanoparticles for organic photovoltaics
AU - Pan, Xun
AU - Sharma, Anirudh
AU - Gedefaw, Desta
AU - Kroon, Renee
AU - Diaz De Zerio, Amaia
AU - Holmes, Natalie P.
AU - Kilcoyne, A.L. David
AU - Barr, Matthew G
AU - Fahy, Adam
AU - Marks, Melissa
AU - Zhou, Xiaojing
AU - Belcher, Warwick
AU - Dastoor, Paul C
AU - Andersson, Mats R.
PY - 2018/8
Y1 - 2018/8
N2 - Aqueous nanoparticle dispersions were prepared from a conjugated polymer poly[thiophene-2,5-diyl-alt-5,10-bis((2-hexyldecyl)oxy)dithieno[3,2-c:3′,2′-h][1,5]naphthyridine-2,7-diyl] (PTNT) and fullerene blend utilizing chloroform as well as a non-chlorinated and environmentally benign solvent, o-xylene, as the miniemulsion dispersed phase solvent. The nanoparticles (NPs) in the solid-state film were found to coalesce and offered a smooth surface topography upon thermal annealing. Organic photovoltaics (OPVs) with photoactive layer processed from the nanoparticle dispersions prepared using chloroform as the miniemulsion dispersed phase solvent were found to have a power conversion efficiency (PCE) of 1.04%, which increased to 1.65% for devices utilizing NPs prepared from o-xylene. Physical, thermal and optical properties of NPs prepared using both chloroform and o-xylene were systematically studied using dynamic mechanical thermal analysis (DMTA) and photoluminescence (PL) spectroscopy and correlated to their photovoltaic properties. The PL results indicate different morphology of NPs in the solid state were achieved by varying miniemulsion dispersed phase solvent.
AB - Aqueous nanoparticle dispersions were prepared from a conjugated polymer poly[thiophene-2,5-diyl-alt-5,10-bis((2-hexyldecyl)oxy)dithieno[3,2-c:3′,2′-h][1,5]naphthyridine-2,7-diyl] (PTNT) and fullerene blend utilizing chloroform as well as a non-chlorinated and environmentally benign solvent, o-xylene, as the miniemulsion dispersed phase solvent. The nanoparticles (NPs) in the solid-state film were found to coalesce and offered a smooth surface topography upon thermal annealing. Organic photovoltaics (OPVs) with photoactive layer processed from the nanoparticle dispersions prepared using chloroform as the miniemulsion dispersed phase solvent were found to have a power conversion efficiency (PCE) of 1.04%, which increased to 1.65% for devices utilizing NPs prepared from o-xylene. Physical, thermal and optical properties of NPs prepared using both chloroform and o-xylene were systematically studied using dynamic mechanical thermal analysis (DMTA) and photoluminescence (PL) spectroscopy and correlated to their photovoltaic properties. The PL results indicate different morphology of NPs in the solid state were achieved by varying miniemulsion dispersed phase solvent.
KW - nanoparticles
KW - organic photovoltaics
KW - green solvent
KW - environmentally-friendly processing
KW - Nanoparticles
KW - Organic photovoltaics
KW - Environmentally friendly processing
KW - Green solvent
UR - http://purl.org/au-research/grants/ARC/DP170102467
UR - http://www.scopus.com/inward/record.url?scp=85049336361&partnerID=8YFLogxK
U2 - 10.1016/j.orgel.2018.05.040
DO - 10.1016/j.orgel.2018.05.040
M3 - Article
VL - 59
SP - 432
EP - 440
JO - ORGANIC ELECTRONICS
JF - ORGANIC ELECTRONICS
SN - 1566-1199
ER -