DataVXAdvanced MaterialsPaper
journal article·2020-12

A Tuned Alternating D–A Copolymer Hole‐Transport Layer Enables Colloidal Quantum Dot Solar Cells with Superior Fill Factor and Efficiency

Hong Il Kim, Se‐Woong Baek, Hyung Jin Cheon, Seung Un Ryu, Seungjin Lee, Min‐Jae Choi, Kyoungwon Choi, Margherita Biondi, Sjoerd Hoogland, F. P. García de Arquer, Soon‐Ki Kwon, Yun‐Hi Kim, Taiho Park, Edward H. Sargent

Advanced Materials· Volume 32· Issue 48
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Source abstract

Abstract

Abstract The need for optoelectronic and chemical compatibility between the layers in colloidal quantum dot (CQD) photovoltaic devices remains a bottleneck in further increasing performance. Conjugated polymers are promising candidates as new hole‐transport layer (HTL) materials in CQD solar cells (CQD‐SCs) owing to the highly tunable optoelectronic properties and compatible chemistries. A diketopyrrolopyrrole‐based polymer with benzothiadiazole derivatives (PD2FCT‐29DPP) as an HTL in these devices is reported. The energy level, molecular orientation, and hole mobility of this HTL are manipulated through molecular engineering. By levering the polymer's optical absorption spectrum complementary to that of the CQD active layer, EQE across the visible and near‐infrared regions is maximized. As a result, a PD2FCT‐29DPP‐based device exhibits a fill factor of 70% and approximately 35% efficiency enhancement compared to a PTB7‐based device.
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Research context

PolymersElectronic materials

OpenAlex topics: Quantum Dots Synthesis And Properties · Perovskite Materials and Applications · Organic Electronics and Photovoltaics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Electrical and Computer Engineering University of Toronto 10 King's College Road Toronto Ontario M5S 3G4 Canada

Department of Chemical Engineering Pohang University of Science and Technology (POSTECH) 77 Cheongam‐Ro, Nam‐Gu Pohang Gyeongbuk 37673 Korea

Department of Chemistry Gyeongsang National University and Research Institute of Nature Science 501 Jinju‐daero Jinju Gyeongnam 52828 Korea

Department of Materials Engineering and Convergence Technology and ERI Gyeongsang National University 501 Jinju‐daero Jinju Gyeongnam 52828 Korea

Funding

National Research Foundation of Korea · Ministry of Science, ICT and Future Planning · Natural Sciences and Engineering Research Council of Canada

References (27)

Show source-provided references
1. 10.1021/nn900863a10.1021/nn900863a ↗
2. 10.1038/s41467-019-13437-210.1038/s41467-019-13437-2 ↗
3. 10.1002/adma.20190430410.1002/adma.201904304 ↗
4. 10.1002/adma.20170074910.1002/adma.201700749 ↗
5. 10.1039/C9EE03348C10.1039/C9EE03348C ↗
6. 10.1038/nenergy.2016.3510.1038/nenergy.2016.35 ↗
7. 10.1021/acsenergylett.7b0054010.1021/acsenergylett.7b00540 ↗
8. 10.1002/aenm.20180057210.1002/aenm.201800572 ↗
9. 10.1021/nl304604y10.1021/nl304604y ↗
10. 10.3390/nano708020110.3390/nano7080201 ↗
11. 10.1039/C7EE03184J10.1039/C7EE03184J ↗
12. 10.1021/acs.jpcc.5b0376110.1021/acs.jpcc.5b03761 ↗
13. 10.1021/acsami.5b1022810.1021/acsami.5b10228 ↗
14. 10.1039/C7TA07014D10.1039/C7TA07014D ↗
15. 10.1021/acsenergylett.9b0230110.1021/acsenergylett.9b02301 ↗
16. 10.1038/s41560-019-0492-110.1038/s41560-019-0492-1 ↗
17. 10.1021/am505925w10.1021/am505925w ↗
18. 10.1039/C5EE00855G10.1039/C5EE00855G ↗
19. 10.1021/acs.chemmater.5b0225110.1021/acs.chemmater.5b02251 ↗
20. 10.1039/C9TA01976F10.1039/C9TA01976F ↗
21. 10.1039/c3ee00015j10.1039/c3ee00015j ↗
22. 10.1039/C7QM00169J10.1039/C7QM00169J ↗
23. 10.1002/adma.20120179510.1002/adma.201201795 ↗
24. 10.1021/acs.macromol.8b0041910.1021/acs.macromol.8b00419 ↗
25. 10.1002/adma.20140172510.1002/adma.201401725 ↗
26. 10.1039/C6TA00126B10.1039/C6TA00126B ↗
27. 10.1063/1.491358910.1063/1.4913589 ↗