All-Polymer Solar Cells with over 12% Efficiency and a Small Voltage Loss Enabled by a Polymer Acceptor Based on an Extended Fused Ring CoreVise andre og tillknytning
2020 (engelsk)Inngår i: Advanced Energy Materials, ISSN 1614-6832, E-ISSN 1614-6840, Vol. 10, artikkel-id 2001408Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]
Although the field of all-polymer solar cells (all-PSCs) has seen rapid progress in device efficiencies during the past few years, there are limited choices of polymer acceptors that exhibit strong absorption in the near-IR region and achieve high open-circuit voltage (V-OC) at the same time. In this paper, an all-PSC device is demonstrated with a 12.06% efficiency based on a new polymer acceptor (named PT-IDTTIC) that exhibits strong absorption (maximum absorption coefficient: 2.41 x 10(5)cm(-1)) and a narrow optical bandgap (1.49 eV). Compared to previously reported polymer acceptors such as those based on the indacenodithiophene (IDT) core, the indacenodithienothiophene (IDTT) core has further extended fused ring, providing the polymer with extended absorption into the near-IR region and also increases the electron mobility of the polymer. By blending PT-IDTTIC with the donor polymer, PM6, a high-efficiency all-PSC is achieved with a small voltage loss of 0.52 V, without sacrificingJ(SC)and FF, which demonstrates the great potential of high-performance all-PSCs.
sted, utgiver, år, opplag, sider
WILEY-V C H VERLAG GMBH , 2020. Vol. 10, artikkel-id 2001408
Emneord [en]
all-polymer solar cells; polymer acceptors; voltage loss
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-168528DOI: 10.1002/aenm.202001408ISI: 000553781500001OAI: oai:DiVA.org:liu-168528DiVA, id: diva2:1462191
Merknad
Funding Agencies|National Basic Research Program of China (973 Program)National Basic Research Program of China [2013CB834701, 2014CB643501]; Hong Kong Research Grants CouncilHong Kong Research Grants Council [T23-407/13 N, N_HKUST623/13, 16305915, 16322416, 606012]; HK JEBN Limited; HKUST presidents office [FP201]; Shenzhen Technology and Innovation Commission [JCYJ20170413173814007, JCYJ20170818113905024]; National Key Research and Development Program of China [2019YFA0705900]; National Science Foundation of ChinaNational Natural Science Foundation of China [21374090]; Hong Kong Innovation and Technology Commission [ITC-CNERC14SC01]; National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China [21801124]; HK-RGCHong Kong Research Grants Council [16306117, 16304218, 16306319]
2020-08-282020-08-282022-10-06