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MS thesis-ZIXIN WANG .pdf (5.59 MB)

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TOWARDS HIGH-PERFORMANCE PEROVSKITE SOLAR CELLS BY CATHODE INTERFACIAL ENGINEERING WITH TERNARY METAL OXIDE AND DEVICE ENGINEERING WITH BULK HETROJUNCTION

Wang, Zixin
http://rave.ohiolink.edu/etdc/view?acc_num=akron149520580193777

Abstract Details

2017, Master of Science in Polymer Engineering, University of Akron, Polymer Engineering.
Perovskite hybrid solar cells (Pero-HSCs) are rising stars in the nowadays photovoltaic(PV) technology. Within couple of years, the efficiency of perovskite solar cells has evolutionarily reach 22%, which override other types of solar cell by its low cost and ease to assemble. In theory, the Pero-HSCs has an upper conversion efficiency as 31%, therefore there are huge potential to be fulfilled in the near future research. In this work, we mainly focused on strengthening the electron extraction and transportation in the lead methylammonium tri-iodide(MAPbI3) perovskite solar cells. After a brief introduction on the origins and working principles of perovskite solar cells (Chapter ¿), the optimization of the cathode interface layer is addressed (Chapter ¿). Followed, a bulk heterojunction perovskite device was assembled by asserting n-type nanoparticles into perovskite layer for the first time (Chapter ¿). Last, the significance of this work and outlook was analyzed in Chapter ¿. Interfacial engineering of conventional perovskite solar cell is investigated by adopting a ternary metal oxide, Zn2SnO4 (ZSO), as electron extraction layer(EEL). Compared with generally used ZnO (ZO), thin film of ZSO nanoparticles(NPs) possess higher transparency over the entire visible wavelength, and is low temperature (=100 oC) annealed. Combined with more favorable energy level for electron extraction as cathode interface layer and higher electron conductivity, a dramatically boost in short circuit current density (JSC) and accordingly higher power conversion efficiency(PCE) were observed. Device engineering of inverted structured perovskite solar cells by incorporating either ZO NPs or ZSO NPs into the perovskite layer to form bulk heterojunction is discussed. Owning to the improved carrier mobility and much more balanced e-h transport, charge recombination was largely suppressed, the enlarged VOC, JSC and fill factor(FF) was obtained, corresponding to a 25% augment in PCE compared with planar perovskite device.
Xiong Gong (Advisor)
Thein Kyu (Committee Chair)
Zhenmeng Peng (Committee Member)
106 p.
Energy; Engineering; Materials Science; Polymers
Perovskite solar cells, Interfacial engineering, Device engineering

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Citations

  • Wang, Z. (2017). TOWARDS HIGH-PERFORMANCE PEROVSKITE SOLAR CELLS BY CATHODE INTERFACIAL ENGINEERING WITH TERNARY METAL OXIDE AND DEVICE ENGINEERING WITH BULK HETROJUNCTION [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron149520580193777

    APA Style (7th edition)

  • Wang, Zixin. TOWARDS HIGH-PERFORMANCE PEROVSKITE SOLAR CELLS BY CATHODE INTERFACIAL ENGINEERING WITH TERNARY METAL OXIDE AND DEVICE ENGINEERING WITH BULK HETROJUNCTION. 2017. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron149520580193777.

    MLA Style (8th edition)

  • Wang, Zixin. "TOWARDS HIGH-PERFORMANCE PEROVSKITE SOLAR CELLS BY CATHODE INTERFACIAL ENGINEERING WITH TERNARY METAL OXIDE AND DEVICE ENGINEERING WITH BULK HETROJUNCTION." Master's thesis, University of Akron, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron149520580193777

    Chicago Manual of Style (17th edition)

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