Emerging Plasmon-Optical and -Electrical Effects in Organic Solar Cells: A Combined Theoretical and Experimental Study
The imbalance of the optical photon absorption length and electrical exciton diffusion length in organic materials has set an upper limit of the active layer thickness around two hundred nanometers, resulting in the insufficient photon absorption of organic solar cells (OSCs). The high-efficiency OSCs need to address the above issues, and it is vital to introduce light manipulations for enhancing the optical photon absorption of the active layer (~200 nm), which is electrically thick but optically thin. The plasmonic effects of metal nanostructures facilitating the strong light-matter interactions have emerged as a promising tool for enhancing the light absorption of active layer due to its capability of amplifying the light intensity up to ten even hundred times in the subwavelength region. In this Chapter, we will briefly review the mechanisms of two types surface plasmon polaritons (SPPs) and their applications in enhancing the OSC efficiency. Regarding the narrow band feature of metal plasmonic resonances, we offer the design rules toward the wideband plasmonic resonances. The plasmon-optical effects with multiple plasmonic resonances are used to enhance the active layer absorption in whole visible region. Besides the plasmon-optical effects, the plasmon-electrical effects of the metal nanostructures, which are emerging as the interestingly hot topics, will be studied. Finally, the simultaneously plasmon-optical and -electrical effects induced by plasmonic asymmetric modes will be introduced and realized in single OSC device for boosting its performance. This Chapter devotes to provide an in-depth understanding of utilizing the plasmon-optical and -electrical effects for high-performance OSCs.
KeywordsSolar cells Metal nanostructure Plasmon-optical effect Plasmon-electrical effect
This work is supported by the National Natural Science Foundation of China (Grant No. 61701003, 61471001, 51571166, and 61505167), Anhui Province (No. 1808085QF179), Open Fund for Discipline construction, Institute of Physical Science and Information Technology, Anhui University, the Guangdong Science and Technology Program (2017B030314002), and open fund of Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Natural Science Foundation of the Anhui Higher Education Institutions of China (Grant No. KJ2017ZD02) and the Natural Science Research Project of Shaanxi Province (Grant No. 2016JM5001). This research is also supported by the Student Scholarship of the University of Hong Kong and the Introduction Project of High-Level Talent in Anhui University.
- 1.NREL Efficiency Chart. http://www.nrel.gov/pv/assets/images/efficiency_chart.jpg. Accessed 19 Jun 2017
- 10.Richter JM, Abdi-Jalebi M, Sadhanala A, Tabachnyk M, Rivett JP, Pazos-Outon LM, Godel KC, Price M, Deschler F, Friend RH (2016) Enhancing photoluminescence yields in lead halide perovskites by photon recycling and light out-coupling. Nat Commun 7:13941. https://doi.org/10.1038/ncomms13941CrossRefPubMedPubMedCentralGoogle Scholar
- 25.Wang DH, Park KH, Seo JH, Seifter J, Jeon JH, Kim JK, Park JH, Park OO, Heeger AJ (2011) Enhanced power conversion efficiency in PCDTBT/PC70BM bulk heterojunction photovoltaic devices with embedded silver nanoparticle clusters. Adv Energy Mater 1(5):766–770. https://doi.org/10.1002/aenm.201100347CrossRefGoogle Scholar
- 31.Yang X, Chueh CC, Li CZ, Yip HL, Yin PP, Chen HZ, Chen WC, Jen AKY (2013) High-efficiency polymer solar cells achieved by doping plasmonic metallic nanoparticles into dual charge selecting interfacial layers to enhance light trapping. Adv Energy Mater 3(5):666–673. https://doi.org/10.1002/aenm.201200726CrossRefGoogle Scholar
- 39.Ren H, Ren XG, Huang ZX, Wu XL (2019) Synergetic light trapping effects in organic solar cells with a patterned semi-transparent electrode. Phys Chem Chem Phys 21(21):11306–11312. https://doi.org/10.1039/C9CP00581A
- 52.Ng A, Yiu WK, Foo Y, Shen Q, Bejaoui A, Zhao YY, Gokkaya HC, Djurisic AB, Zapien JA, Chan WK, Surya C (2014) Enhanced performance of PTB7:PC71BM solar cells via different morphologies of gold nanoparticles. ACS Appl Mater Interfaces 6(23):20676–20684. https://doi.org/10.1021/am504250wCrossRefPubMedGoogle Scholar
- 53.Ren XG, Cheng JQ, Zhang SQ, Li XC, Rao TK, Huo LJ, Hou JH, Choy WCH (2016) High efficiency organic solar cells achieved by the synergetic plasmon-optical and -electrical effects from asymmetric modes of gold nanostars. Small. https://doi.org/10.1002/smll.201601949