Document Type : Original Reaearch Article
Authors
1 Ph. D. Candidate, Department of Physics, Isfahan University of Technology, Isfahan, Isfahan, Iran
2 Associate Professor, Department of Physics, Isfahan University of Technology, Isfahan, Isfahan, Iran
3 Professor, Department of Materials Engineering, Isfahan University of Technology, Isfahan, Isfahan, Iran
4 Professor, Department of Physics, Sharif University of Technology, Tehran, Tehran, Iran
5 Ph. D. Student, Department of Physics, Sharif University of Technology, Tehran, Tehran, Iran
Abstract
In perovskite solar cells (PSCs), effective electron extraction and reduction of electron-hole pair recombination at the electron transport layer (ETL)/perovskite interface is essential for obtaining higher performance. In this research, the presence effect of a metal oxide ultra-thin layer (< 10 nm thick) on the major ETL (≈ 50 nm thick) in improving the photovoltaic performance of the cell was investigated. For this purpose, a complete set of bilayer structures for the three common ETL metal oxide materials TiO2, SnO2 and WO3, were provided using the accurate and reproducible radio-frequency (RF) sputtering deposition method, and their performance as ETL in the cell was compared. Structural and electrical characterizations of different cells and ETLs were examined by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), UV-vis spectroscopy, Mott-Schottky analysis and J-V diagrams. The use of TiO2/SnO2-UTL, TiO2/WO3-UTL and SnO2/WO3-UTL bilayer structures has been shown to significantly increase cell efficiency by creating more efficient energy band alignment. On the other hand, using their inverted bilayer structures, SnO2/TiO2-UTL, WO3/TiO2-UTL, and WO3/SnO2-UTL, resulted in reduced cell efficiency. The results suggest a simple and promising approach to designe more efficient photovoltaic devices with improved performance.
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Main Subjects
- Farzan, H., "The study of thermostat impact on energy consumption in a residential building by using TRNSYS", Journal of Renewable Energy and Environment (JREE),Vol. 6, (2019), 15-20. https://doi.org/10.30501/JREE.2019.95531
- Torknik, F. S., Choi, G. M., Maghsoudipour, A., Kianpour Rad, M., "Nanostructuring platinum nanoparticles on Ni/Ce0.8Gd0.2O2-δ anode for low temperature solid oxide fuel cell via single-step infiltration: A case study", Advanced Ceramics Progress,Vol. 4, (2018), 45-51. https://doi.org/10.30501/ACP.2018.90833
- Web., Available at: https://www.nrel.gov/pv/cell-efficiency.html
- Ke, W., Fang, G., Wan, J., Tao, H., Liu, Q., Xiong, L., Qin, P., Wang, J., Lei, H., Yang, G., Qin, M., Zhao, X., Yan, Y., "Efficient hole-blocking layer-free planar halide perovskite thin-film solar cells", Nature Communications,Vol. 6, (2015), 6700-6706. https://doi.org/10.1038/ncomms7700
- Liu, H., Huang, Z., Wei, S., Zheng, L., Xiao, L., Gong, Q., "Nano-structured electron transporting materials for perovskite solar cells", Nanoscale,Vol. 8, (2016), 6209-6221. https://doi.org/10.1039/C5NR05207F
- Salehi, A., Sadrnezhaad, S., "Comparison of carbon nitride nanosheets synthesized by thermal and ultrasonic thermal (combined) methods", Journal of Advanced Materials and Technologies (JAMT),Vol. 8, No. 4, (2020), 1-7. (In Farsi). https://doi.org/10.30501/JAMT.2020.93224
- Yang, G., Tao, H., Qin, P., Ke, W., Fang, G., "Recent progress in electron transport layers for efficient perovskite solar cells", Journal of Materials Chemistry A,Vol. 4, (2016), 3970-3990. https://doi.org/10.1039/C5TA09011C
- Eslami Afrooz, I., Chuan Ching, D. L., "Effect of novel swirl distributor plate on hydrodynamics of fluidized bed gasifier", International Journal of Engineering,Vol. 32, (2019), 1358-1365. https://doi.org/10.5829/IJE.2019.32.10A.04
- Li, X., Bi, D., Yi, C., Décoppet, J. -D., Luo, J., Zakeeruddin, S. M., Hagfeldt, A., Grätzel, M., "A vacuum flash–assisted solution process for high-efficiency large-area perovskite solar cells", Science,Vol. 353, (2016), 58-62. https://science.sciencemag.org/content/353/6294/58
- Chen, W., Wu, Y., Yue, Y., Liu, J., Zhang, W., Yang, X., Chen, H., Bi, E., Islam, A., Grätzel, M., Han, L., "Efficient and stable large-area perovskite solar cells with inorganic charge extraction layers", Science,Vol. 35, (2015), 944-948. https://science.sciencemag.org/content/350/6263/944
- Jiang, Q., Zhang, L., Wang, H., Yang, X., Meng, J., Liu, H., Yin, Z., Wu, J., Zhang, X., You, J., "Enhanced electron extraction using SnO2 for high-efficiency planar-structure HC (NH2)2PbI3-based perovskite solar cells", Nature Energy,Vol. 2, (2017), 16177. https://doi.org/10.1038/nenergy.2016.177
- Tan, H., Jain, A., Voznyy, O., Lan, X., De Arquer, F. P. G., Fan, J. Z., Quintero-Bermudez, R., Yuan, M., Zhang, B., Zhao, Y., Fan, F., Li, P., Na Quan, L., Zhao, Y., Lu, Z. -H., Yang, Z., Hoogland, S., Sargent, E. H., "Efficient and stable solution-processed planar perovskite solar cells via contact passivation", Science,Vol. 355, (2017), 722-726. https://science.sciencemag.org/content/355/6326/722
- Wu, Y., Yang, X., Chen, W., Yue, Y., Cai, M., Xie, F., Bi, E., Islam, A., Han, L., "Perovskite solar cells with 18.21 % efficiency and area over 1 cm2 fabricated by heterojunction engineering", Nature Energy,Vol. 1, (2016), 16148. https://doi.org/10.1038/nenergy.2016.148
- Choi, J., Song, S., Hörantner, M. T., Snaith, H. J., Park, T., "Well-defined nanostructured, single-crystalline TiO2 electron transport layer for efficient planar perovskite solar cells", ACS Nano,Vol. 10, (2016), 6029-6036. https://doi.org/10.1021/acsnano.6b01575
- Edri, E., Kirmayer, S., Henning, A., Mukhopadhyay, S., Gartsman, K., Rosenwaks, Y., Hodes, G., Cahen, D., "Why lead methylammonium tri-iodide perovskite-based solar cells require a mesoporous electron transporting scaffold (but not necessarily a hole conductor)", Nano Letters,Vol. 14, (2014), 1000-1004. https://doi.org/10.1021/nl404454h
- Mohammadian-Sarcheshmeh, H., Mazloum-Ardakani, M., "Recent advancements in compact layer development for perovskite solar cells", Heliyon,Vol. 4, (2018), 00912. https://doi.org/10.1016/j.heliyon.2018.e00912
- Abrusci, A., Stranks, S. D., Docampo, P., Yip, H. -L.,. Jen, A. K. -Y, Snaith, H. J., "High-performance perovskite-polymer hybrid solar cells via electronic coupling with fullerene monolayers", Nano Letters,Vol. 13, (2013), 3124-3128. https://doi.org/10.1021/nl401044q
- Wojciechowski, K., Stranks, S. D., Abate, A., Sadoughi, G., Sadhanala, A., Kopidakis, N., Rumbles, G., Li, C. -Z., Friend, R. H., Jen, A. K. -Y., Snaith, H. J., "Heterojunction modification for highly efficient organic–inorganic perovskite solar cells", ACS Nano,Vol. 8, (2014), 12701-12709. https://doi.org/10.1021/nn505723h
- Yang, D., Zhou, X., Yang, R., Yang, Z., Yu, W., Wang, X., Li, C., Liu, Z. (F.), Chang, R. P. H., "Surface optimization to eliminate hysteresis for record efficiency planar perovskite solar cells", Energy & Environmental Science,Vol. 9, (2016), 3071-3078. https://doi.org/10.1039/C6EE02139E
- Li, Y., Zhu, J., Huang, Y., Liu, F., Lv, M., Chen, S., Hu, L., Tang, J., Yao, J., Dai, S., "Mesoporous SnO2 nanoparticle films as electron-transporting material in perovskite solar cells", RSC Advances,Vol. 5, (2015), 28424-28429. https://doi.org/10.1039/C5RA01540E
- Osali, S., Esfahani, H., Karami, H. R., "Photoluminescence and IR properties of Al doped ZnO nanofibers." Journal of Advanced Materials and Technologies (JAMT),Vol. 8, No. 4, (2020), 9-17. (In Farsi). https://doi.org/10.30501/JAMT.2020.104190
- Kulkarni, A., Jena, A. K., Chen, H. -W., Sanehira, Y., Ikegami, M., Miyasaka, T., "Revealing and reducing the possible recombination loss within TiO2 compact layer by incorporating MgO layer in perovskite solar cells", Solar Energy,Vol. 136, (2016), 379-384. https://doi.org/10.1016/j.solener.2016.07.019
- Lu, H., Tian, W., Gu, B., Zhu, Y., Li, L., "TiO2 electron transport bilayer for highly efficient planar perovskite solar cell", Small,Vol. 13, (2017), 1701535. https://doi.org/10.1002/smll.201701535
- Xu, X., Zhang, H., Shi, J., Dong, J., Luo, Y., Li, D., Meng, Q., "Highly efficient planar perovskite solar cells with a TiO2/ZnO electron transport bilayer", Journal of Materials Chemistry A,Vol. 2, (2015), 19288-19293. https://doi.org/10.1039/C5TA04239A
- Otoufi, M. K., Ranjbar, M., Kermanpur, A., Taghavinia, N., Minbashi, M., Forouzandeh, M., Ebadi, F., “Enhanced performance of planar perovskite solar cells using TiO2/SnO2 and TiO2/WO3 bilayer structures: Roles of the interfacial layers”, Solar Energy, Vol. 208, (2020), 697-707. https://doi.org/10.1016/j.solener.2020.08.035
- Kogo, A., Ikegami, M., Miyasaka, T., "A SnOx–brookite TiO2 bilayer electron collector for hysteresis-less high efficiency plastic perovskite solar cells fabricated at low process temperature", Chemical Communications,(2016). https://doi.org/10.1039/C6CC02589G
- Qiu, L., Liu, Z., Ono, L. K., Jiang, Y., Son, D. Y., Hawash, Z., He, S., Qi, Y., "Scalable fabrication of stable high efficiency perovskite solar cells and modules utilizing room temperature sputtered SnO2 electron transport layer", Advanced Functional Materials,(2018), 1806779. https://doi.org/10.1002/adfm.201806779
- Huang, X., Hu, Z., Xu, J., Wang, P., Wang, L., Zhang, J., Zhu, Y., "Low-temperature processed SnO2 compact layer by incorporating TiO2 layer toward efficient planar heterojunction perovskite solar cells", Solar Energy Materials and Solar Cells,Vol. 164, (2017), 87-92. https://doi.org/10.1016/j.solmat.2017.02.010
- Lu, G., He, F., Pang, S., Yang, H., Chen, D., Chang, J., Lin, Z., Zhang, J., Zhang, C., "A PCBM-modified TiO2 blocking layer towards efficient perovskite solar cells", International Journal of Photoenergy,(2017). https://doi.org/10.1155/2017/2562968
- Eze, V. O., Seike, Y., Mori, T., "Efficient planar perovskite solar cells using solution-processed amorphous WOx/fullerene C60 as electron extraction layers", OrganicElectronics,Vol. 46, (2017), 253-262. https://doi.org/10.1016/j.orgel.2017.04.024
- Noh, M. F. M., Teh, C. H., Daik, R., Lim, E. L., Yap, C. C., Ibrahim, M. A., Ludin, M. A., Yusoff, A. R. B. M., Jang, J., Teridi, M. A. M., "The architecture of the electron transport layer for a perovskite solar cell", Journal of Materials Chemistry C,Vol. 6, (2018), 682-712. https://doi.org/10.1039/C7TC04649A
- Saliba, M., Matsui, T., Seo, J.-Y., Domanski, K., Correa-Baena, J.-P., Nazeeruddin, M. K., Zakeeruddin, S. M., Tress, W., Abate, A., Hagfeldt, A., Grätzel, M., "Cesium-containing triple cation perovskite solar cells: improved stability, reproducibility and high efficiency", Energy & Environmental Science, Vol. 9, (2016), 1989-1997. https://doi.org/10.1039/C5EE03874J
- Swanepoel, R., "Determination of surface roughness and optical constants of inhomogeneous amorphous silicon films", Journal of Physics E: Scientific Instruments,Vol. 17, (1984), 896. https://iopscience.iop.org/article/10.1088/0022-3735/17/10/023/meta
- Wang, K., Shi, Y., Dong, Q., Li, Y., Wang, S., Yu, X., Wu, M., Ma, T., "Low-temperature and solution-processed amorphous WOx as electron-selective layer for perovskite solar cells", The Journal of Physical Chemistry Letters,Vol. 6, (2015), 755-759. https://doi.org/10.1021/acs.jpclett.5b00010
- Ganbavle, V., Agawane, G., Moholkar, A., Kim, J., Rajpure, K., "Structural, optical, electrical, and dielectric properties of the spray-deposited WO3 thin films", Journal of Materials Engineering and Performance,Vol. 23, (2014), 1204-1213. https://doi.org/10.1007/s11665-014-0873-3
- Lim, S., Huang, N. M., Lim, H. N., Mazhar, M., "Surface modification of aerosol-assisted CVD produced TiO2 thin film for dye sensitised solar cell", International Journal of Photoenergy,(2014). https://www.hindawi.com/journals/ijp/2014/586707
- Reyes-Coronado, D., Rodríguez-Gattorno, G., Espinosa-Pesqueira, M., Cab, C., de Coss, R. d., Oskam, G., "Phase-pure TiO2 nanoparticles: anatase, brookite and rutile", Nanotechnology,Vol. 19, (2008), 145605. http://iopscience.iop.org/article/10.1088/0957-4484/19/14/145605/meta
- Li J., Wu, N., "Semiconductor-based photocatalysts and photoelectrochemical cells for solar fuel generation: a review", Catalysis Science & Technology,Vol. 5, (2015), 1360-1384. https://doi.org/10.1039/C4CY00974F
- Berberich, L., Bell, M., "The dielectric properties of the rutile form of TiO2", Journal of Applied Physics,Vol. 11, (1940), 681-692. https://doi.org/10.1063/1.1712721
- Kormann, C., Bahnemann, D. W., Hoffmann, M. R., "Preparation and characterization of quantum-size titanium dioxide", The Journal of Physical Chemistry,Vol. 92, (1988), 5196-5201. https://doi.org/10.1021/j100329a027
- Yıldırım, M. A., Yıldırım, S. T., Sakar, E. F., Ateş, A., "Synthesis, characterization and dielectric properties of SnO2 thin films", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy,Vol. 133, (2014), 60-65. https://doi.org/10.1016/j.saa.2014.05.035
- Button, K. J., Fonstad, C. G., Dreybrodt, W., "Determination of the electron masses in stannic oxide by submillimeter cyclotron resonance", Physical Review B,Vol. 4, (1971), 4539. https://doi.org/10.1103/PhysRevB.4.4539
- Paliwal, A., Sharma, A., Tomar, M., Gupta, V., "Optical properties of WO3 thin films using surface plasmon resonance technique", Journal of Applied Physics,Vol. 115, (2014), 043104. https://doi.org/10.1063/1.4862962
- Berak J. M., Sienko, M., "Effect of oxygen-deficiency on electrical transport properties of tungsten trioxide crystals", Journal of Solid State Chemistry,Vol. 2, (1970), 109-133. https://doi.org/10.1016/0022-4596(70)90040-X
- Roh, S. -J., Mane, R. S., Min, S. -K., Lee, W. -J., Lokhande, C., Han, S. -H., "Achievement of 4.51 % conversion efficiency using ZnO recombination barrier layer in TiO2 based dye-sensitized solar cells", Applied Physics Letters,Vol. 89, (2006), 253512. https://doi.org/10.1063/1.2410240
- Minemoto T., Murata, M., "Theoretical analysis on effect of band offsets in perovskite solar cells", Solar Energy Materials and Solar Cells,Vol. 133, (2015), 8-14. https://doi.org/10.1016/j.solmat.2014.10.036