Simultaneously Improved Efficiency and Stability in All-Polymer Solar Cells by a P-i-N ArchitectureShow others and affiliations
2019 (English)In: ACS Energy Letters, E-ISSN 2380-8195, Vol. 4, no 9, p. 2277-2286Article in journal (Refereed) Published
Abstract [en]
All-polymer organic solar cells offer exceptional stability. Unfortunately, the use of bulk heterojunction (BHJ) structure has the intrinsic challenge to control the side-chain entanglement and backbone orientation to achieve sophisticated phase separation in all-polymer blends. Here, we revealed that the P-i-N structure can outperform the BHJ ones with a nearly 50% efficiency improvement, reaching a power conversion efficiency approaching 10%. This P-i-N structure can also provide an enhanced internal electric field and remarkably stable morphology Sequential deposition under harsh thermal stress. We have further demonstrated generality of the P-i-N structure in several other all-polymer systems. Considering the adjustable polymer molecular weight and solubility, the P-i-N device structure can be more beneficial for all-polymer systems. With the design of more crystalline polymers, the antiquated P-i-N structure can further show its strength in all-polymer systems by simplified morphology control and improved carrier extraction, becoming a more favorite device structure than the dominant BHJ structure.
Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2019. Vol. 4, no 9, p. 2277-2286
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-161185DOI: 10.1021/acsenergylett.9b01459ISI: 000486361500033OAI: oai:DiVA.org:liu-161185DiVA, id: diva2:1365699
Note
Funding Agencies|Natural Science Foundation of Jiangsu Province of ChinaNatural Science Foundation of Jiangsu Province [BK20170337]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [51803144, 51761145013, 61674111]; China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2019M651942]; "111" projects; U.S. Department of Energy (DOE)United States Department of Energy (DOE) [DE-AC36-08GO28308]; Office of Energy Efficiency and Renewable Energy Solar Energy Technologies Office; Office of Science, Office of Basic Energy Sciences, of the DOEUnited States Department of Energy (DOE) [DE-AC02-05CH11231]
2019-10-252019-10-252020-12-15