Sub-4 nm mapping of donor-acceptor organic semiconductor nanoparticle composition

被引：6

作者：

Persson, Ingemar ^{[1
,2
]}

Laval, Hugo ^{[3
]}

Chambon, Sylvain ^{[4
]}

Bonfante, Gwenael ^{[4
]}

Hirakawa, Kazuhiko ^{[4
]}

Wantz, Guillaume ^{[3
]}

Watts, Benjamin ^{[5
]}

Marcus, Matthew A. A. ^{[6
]}

Xu, Xiaoxue ^{[7
]}

Ying, Lei ^{[8
]}

Lakhwani, Girish ^{[9
,10
]}

Andersson, Mats R. R. ^{[11
]}

Cairney, Julie M. M. ^{[1
,12
]}

Holmes, Natalie P. P. ^{[1
,10
,12
]}

机构：

[1] Univ Sydney, Australian Ctr Microscopy & Microanal, Sydney, NSW 2006, Australia

[2] Linkoping Univ, Dept Phys Chem & Biol IFM, Thin Film Phys, SE-58183 Linkoping, Sweden

[3] Univ Bordeaux, IMS, CNRS,Bordeaux INP,ENSCBP, UMR 5218, F-33405 Talence, France

[4] Univ Tokyo, Inst Ind Sci, LIMMS CNRS IIS IRL2820, 4-6-1 Komaba,Meguro Ku, Tokyo 1538505, Japan

[5] Paul Scherrer Inst PSI, CH-5232 Villigen, Switzerland

[6] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

[7] Univ Technol Sydney, Fac Engn & Informat Technol, Sch Biomed Engn, Ultimo, NSW 2007, Australia

[8] South China Univ Technol, Inst Polymer Optoelect Mat & Devices, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Peoples R China

[9] Univ Sydney, ARC Ctr Excellence Exciton Sci, Sch Chem, Sydney, NSW 2006, Australia

[10] Univ Sydney, Univ Sydney Nano Inst, Fac Sci, Sydney, NSW 2006, Australia

[11] Flinders Univ S Australia, Flinders Inst Nanoscale Sci & Technol, Adelaide, SA 5042, Australia

[12] Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia

来源：

NANOSCALE | 2023年 / 15卷 / 13期

基金：

瑞典研究理事会;

关键词：

POLYMER SOLAR-CELLS; MISCIBILITY; PERFORMANCE; BEAMLINE; ENERGY; DAMAGE; BLEND; FILMS;

D O I：

10.1039/d3nr00839h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report, for the first time, sub-4 nm mapping of donor : acceptor nanoparticle composition in eco-friendly colloidal dispersions for organic electronics. Low energy scanning transmission electron microscopy (STEM) energy dispersive X-ray spectroscopy (EDX) mapping has revealed the internal morphology of organic semiconductor donor : acceptor blend nanoparticles at the sub-4 nm level. A unique element was available for utilisation as a fingerprint element to differentiate donor from acceptor material in each blend system. Si was used to map the location of donor polymer PTzBI-Si in PTzBI-Si:N2200 nanoparticles, and S (in addition to N) was used to map donor polymer TQ1 in TQ1:PC71BM nanoparticles. For select material blends, synchrotron-based scanning transmission X-ray microscopy (STXM), was demonstrated to remain as the superior chemical contrast technique for mapping organic donor : acceptor morphology, including for material combinations lacking a unique fingerprint element (e.g. PTQ10:Y6), or systems where the unique element is in a terminal functional group (unsaturated, dangling bonds) and can hence be easily damaged under the electron beam, e.g. F on PTQ10 donor polymer in the PTQ10:IDIC donor : acceptor blend. We provide both qualitative and quantitative compositional mapping of organic semiconductor nanoparticles with STEM EDX, with sub-domains resolved in nanoparticles as small as 30 nm in diameter. The sub-4 nm mapping technology reported here shows great promise for the optimisation of organic semiconductor blends for applications in organic electronics (solar cells and bioelectronics) and photocatalysis, and has further applications in organic core-shell nanomedicines.

引用

页码：6126 / 6142

页数：18

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