journal article·2025-01-23Open access

A Review of Perovskite-Based Solar Cells over the Last Decade: The Evolution of the Hole Transport Layer and the Use of WO3 as an Electron Transport Layer

Albán Ávila-López, Julio César Cruz, Jesús Adrián Díaz-Real, Karla García-Uitz, Daniel Cante-Góngora, German Rodríguez-May

Coatings· Volume 15· Issue 2

Abstract

Perovskite solar cells are part of the third generation of solar cells, a technology that holds the potential to reduce the use of fossil fuels in energy production. Some factors, such as stability and toxicity, jeopardize the scaling process towards commercialization and access to worldwide markets. This work comprises a review over the last decade on PSC advances and progress in the most highly cited databases. A marked trend was found in replacing Pb for Sn from the absorbing perovskite materials, as well as finding the transport layers that will help in the stability and the efficiency of the solar cell. WO3 is presented as a viable element for the formation of the electron transport layer. Spiro-OMeTAD is the most used compound for the hole transport layer, but other viable substitutes were also found. Lastly, the Cs2SnI6 double perovskite was identified as one of the most stable perovskites that emerged in these 10 years. The efficiency and stability of Sn-based solar cells is still very low when compared to their Pb-based counterparts, driving the current research in material science to enhance their performance.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Chalcogenide Semiconductor Thin Films · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

TecNM/I.T. Chetumal, Av. Insurgentes 330, Chetumal 77013, Quintana Roo, Mexico

Centro de Investigación y Desarrollo Tecnológico en Electroquímica, S.C., Parque Tecnológico Queretaro s/n, Sanfandila, Pedro Escobedo 76703, Queretaro, Mexico

CONACYT-TecNM/I.T. Chetumal, Av. Insurgentes 330, Chetumal 77013, Quintana Roo, Mexico

References (100+)

Show source-provided references
1. Letcher, T.M. (2021). Global warming-a complex situation. Climate Change: Observed Impacts on Planet Earth, Elsevier. [3rd ed.].10.1016/B978-0-12-821575-3.00001-3 ↗
2. Noman, M., Khan, Z., and Jan, S.T. (2024). A Comprehensive Review on the Advancements and Challenges in Perovskite solar Cell Technology, Royal Society of Chemistry.10.1039/D3RA07518D ↗
3. Environmental impacts of solar photovoltaic systems: A critical review of recent progress and future outlook10.1016/j.scitotenv.2020.143528 ↗
4. Yang, D. (2019). Introduction. Handbook of Photovoltaic Silicon, Springer Berlin Heidelberg.10.1007/978-3-662-56472-1 ↗
5. Rajbongshi, B.M., and Verma, A. (2019). Emerging nanotechnology for third generation photovoltaic cells. Nanotechnology: Applications in Energy, Drug and Food, Springer International Publishing.10.1007/978-3-319-99602-8_5 ↗
6. Beyond 3rd generation solar cells and the full spectrum project. Recent advances and new emerging solar cells
7. Hayat, M.B., Ali, D., Monyake, K.C., Alagha, L., and Ahmed, N. (2019). Solar Energy—A Look into Power Generation, Challenges, and a Solar-Powered Future, John Wiley and Sons Ltd.10.1002/er.4252 ↗
8. Mesquita, I., Andrade, L., and Mendes, A. (2018). Perovskite Solar Cells: Materials; Configurations; Stability, Elsevier Ltd.10.1016/j.rser.2017.09.011 ↗
9. (2024, August 30). National Renewable Energy Laboratory, Interactive Best Research-Cell Efficiency Chart, Available online: https://www.nrel.gov/pv/interactive-cell-efficiency.html.
10. Historical Analysis of High-Efficiency, Large-Area Solar Cells: Toward Upscaling of Perovskite Solar Cells10.1002/adma.202002202 ↗
11. Raman, R.K., Thangavelu, S.A.G., Venkataraj, S., and Krishnamoorthy, A. (2021). Materials, Methods and Strategies for Encapsulation of Perovskite Solar Cells: From Past to Present, Elsevier Ltd.10.1016/j.rser.2021.111608 ↗
12. Afre, R.A., and Pugliese, D. (2024). Perovskite Solar Cells: A Review of the Latest Advances in Materials, Fabrication Techniques, and Stability Enhancement Strategies. Micromachines, 15.10.3390/mi15020192 ↗
13. Akkerman, Q.A., and Manna, L. (2020). What Defines a Halide Perovskite, American Chemical Society.10.1021/acsenergylett.0c00039 ↗
14. Space group and crystal structure of the Perovskite CaTiO3 from 296 to 1720 K10.1016/j.jssc.2005.06.027 ↗
15. Crystallography Open Database (COD): An open-access collection of crystal structures and platform for world-wide collaboration10.1093/nar/gkr900 ↗
16. Bandgap tuning strategy by cations and halide ions of lead halide perovskites learned from machine learning10.1039/D1RA03117A ↗
17. Improvement of the stability of perovskite solar cells in terms of humidity/heat via compositional engineering10.1088/1361-6463/ab8511 ↗
18. Influence of air annealing on high efficiency planar structure perovskite solar cells10.1021/cm5041997 ↗
19. Efficient and Stable MAPbI3-Based Perovskite Solar Cells Using Polyvinylcarbazole Passivation10.1021/acs.jpclett.0c01776 ↗
20. Theoretical and experimental investigations on the bulk photovoltaic effect in lead-free perovskites MASnI3 and FASnI310.1039/D0RA02584D ↗
21. Design and fabrication of all-inorganic transport materials-based Cs2SnI6 perovskite solar cells10.1007/s10854-023-11197-w ↗
22. Efficient bandgap widening in co-evaporated MAPbI3 perovskite10.1039/D1SE01692J ↗
23. Tin perovskite/fullerene planar layer photovoltaics: Improving the efficiency and stability of lead-free devices10.1039/C5TA02950C ↗
24. Efficient Tin-Based Perovskite Solar Cells Enabled by Precisely Synthesized Single-Isomer Fullerene Bisadducts with Regulated Molecular Packing10.1021/jacs.3c10515 ↗
25. Compositional Design for High-Efficiency All-Inorganic Tin Halide Perovskite Solar Cells10.1021/acsenergylett.3c02032 ↗
26. Ullah, S., Wang, J., Yang, P., Liu, L., Khan, J., Yang, S.-E., Xia, T., Guo, H., and Chen, Y. (2021). Lead-Free Cs2SnI6 Perovskites for Optoelectronic Applications: Recent Developments and Perspectives, John Wiley and Sons Inc.10.1002/solr.202000830 ↗
27. Absorption coefficients of crystalline silicon at wavelengths from 500 nm to 1000 nm10.1007/s10765-013-1414-2 ↗
28. Metallization of solar cells, exciton channel of plasmon photovoltaic effect in perovskite cells10.1016/j.nanoen.2020.104751 ↗
29. Jacak, J.E., and Jacak, W.A. (2022). Routes for Metallization of Perovskite Solar Cells. Materials, 15.10.3390/ma15062254 ↗
30. A comprehensive review of the current progresses and material advances in perovskite solar cells
31. Plasmonic Metal Nanoparticles with Core-Bishell Structure for High-Performance Organic and Perovskite Solar Cells10.1021/acsnano.9b00135 ↗
32. Planar versus mesoscopic perovskite microstructures: The influence of CH3NH3PbI3 morphology on charge transport and recombination dynamics10.1016/j.nanoen.2016.02.031 ↗
33. Stability of perovskite solar cells: Issues and prospects10.1039/D2RA05903G ↗
34. Huang, D., Xiang, H., Ran, R., Wang, W., Zhou, W., and Shao, Z. (2022). Recent Advances in Nanostructured Inorganic Hole-Transporting Materials for Perovskite Solar Cells. Nanomaterials, 12.10.3390/nano12152592 ↗
35. Roy, P., Ghosh, A., Barclay, F., Khare, A., and Cuce, E. (2022). Perovskite Solar Cells: A Review of the Recent Advances. Coatings, 12.10.3390/coatings12081089 ↗
36. Wu, T., Qin, Z., Wang, Y., Wu, Y., Chen, W., Zhang, S., Cai, M., Dai, S., Zhang, J., and Liu, J. (2021). The Main Progress of Perovskite Solar Cells in 2020–2021, Springer Science and Business Media B.V.10.1007/s40820-021-00672-w ↗
37. An introduction to perovskites for solar cells and their characterisation10.1016/j.egyr.2022.08.205 ↗
38. Etgar, L. (2016). Hole Conductor Free Perovskite-Based Solar Cells, Springer.10.1007/978-3-319-32991-8 ↗
39. Incorporating Large A Cations into Lead Iodide Perovskite Cages: Relaxed Goldschmidt Tolerance Factor and Impact on Exciton-Phonon Interaction10.1021/acscentsci.9b00367 ↗
40. Stabilizing Perovskite Structures by Tuning Tolerance Factor: Formation of Formamidinium and Cesium Lead Iodide Solid-State Alloys10.1021/acs.chemmater.5b04107 ↗
41. Boix, P.P., Raga, S.R., and Mathews, N. (2018). Working Principles of Perovskite Solar Cells. Halide Perovskites, Wiley.10.1002/9783527800766.ch2_01 ↗
42. Ghosh, P., Sundaram, S., Nixon, T.P., and Krishnamurthy, S. (2021). Influence of Nanostructures in Perovskite Solar Cells. Encyclopedia of Smart Materials, Elsevier.10.1016/B978-0-12-815732-9.00054-1 ↗
43. Theoretische Abhandlung über CH 3 NH 3 PbI 3-Perowskit-Solarzellen10.1002/ange.201702660 ↗
44. Marinova, N., Valero, S., and Delgado, J.L. (2017). Organic and Perovskite Solar Cells: Working Principles, Materials and Interfaces, Academic Press Inc.10.1016/j.jcis.2016.11.021 ↗
45. Hole and electron transport materials: A review on recent progress in organic charge transport materials for efficient, stable, and scalable perovskite solar cells
46. Suppressing recombination in perovskite solar cells via surface engineering of TiO2 ETL10.1016/j.solener.2019.12.070 ↗
47. Green, M.A., Ho-Baillie, A., and Snaith, H.J. (2014). The Emergence of Perovskite Solar Cells, Nature Publishing Group.10.1038/nphoton.2014.134 ↗
48. Current status of electron transport layers in perovskite solar cells: Materials and properties10.1039/C7RA00002B ↗
49. The architecture of the electron transport layer for a perovskite solar cell
50. Recent progress in electron transport layers for efficient perovskite solar cells10.1039/C5TA09011C ↗
51. Low-temperature and hysteresis-free electron-transporting layers for efficient, regular, and planar structure perovskite solar cells10.1002/aenm.201501056 ↗
52. Hu, W., Yang, S., and Yang, S. (2020). Surface Modification of TiO2 for Perovskite Solar Cells, Cell Press.10.1016/j.trechm.2019.11.002 ↗
53. Organometal halide perovskites as visible-light sensitizers for photovoltaic cells10.1021/ja809598r ↗
54. Kim, T., Lim, J., and Song, S. (2020). Recent Progress and Challenges of Electron Transport Layers in organic Inorganic Perovskite Solar Cells. Energies, 13.10.3390/en13215572 ↗
55. Zheng, S., Wang, G., Liu, T., Lou, L., Xiao, S., and Yang, S. (2019). Materials and Structures for the Electron Transport Layer of Efficient and Stable Perovskite Solar Cells, Science in China Press.10.1007/s11426-019-9469-1 ↗
56. Analysis of various ETL materials for an efficient perovskite solar cell by numerical simulation10.1007/s10854-020-04175-z ↗
57. Highly efficient perovskite solar cells based on a nanostructured WO3-TiO2 core-shell electron transporting material10.1039/C4TA04883K ↗
58. Low-Temperature and Solution-Processed Amorphous WOX as Electron-Selective Layer for Perovskite Solar Cells10.1021/acs.jpclett.5b00010 ↗
59. WO3 Nanoparticles or Nanorods Incorporating Cs2CO3/PCBM Buffer Bilayer as Carriers Transporting Materials for Perovskite Solar Cells10.1186/s11671-016-1670-8 ↗
60. Amorphous Inorganic Electron-Selective Layers for Efficient Perovskite Solar Cells: Feasible Strategy Towards Room-Temperature Fabrication10.1002/adma.201505241 ↗
61. Preparation of ultra-thin and high-quality WO3 compact layers and comparision of WO3 and TiO2 compact layer thickness in planar perovskite solar cells10.1016/j.jssc.2016.03.033 ↗
62. Efficient planar perovskite solar cells using solution-processed amorphous WOx/fullerene C60 as an electron extraction layers10.1016/j.orgel.2017.04.024 ↗
63. Printable WO3 electron transporting layer for perovskite solar cells: Influence on device performance and stability10.1016/j.solmat.2016.10.002 ↗
64. Low Hysteresis Perovskite Solar Cells Using an Electron-Beam Evaporated WO3−x Thin Film as the Electron Transport Layer10.1021/acsaem.9b00547 ↗
65. Achieving efficient flexible perovskite solar cells with room-temperature processed tungsten oxide electron transport layer10.1016/j.jpowsour.2019.227157 ↗
66. Embedding of WO3 nanocrystals with rich oxygen-vacancies in solution processed perovskite film for improved photovoltaic performance10.1016/j.jpowsour.2020.228175 ↗
67. Enhanced performance of planar perovskite solar cells using TiO2/SnO2 and TiO2/WO3 bilayer structures: Roles of the interfacial layers10.1016/j.solener.2020.08.035 ↗
68. Surface modification of ZnO electron transport layer with thermally evaporated WO3 for stable perovskite solar cells10.1016/j.synthmet.2020.116547 ↗
69. Chen, C., Jiang, Y., Wu, Y., Guo, J., Kong, X., Wu, X., Li, Y., Zheng, D., Wu, S., and Gao, X. (2020). Low-Temperature-Processed WOx as Electron Transfer Layer for Planar Perovskite Solar Cells Exceeding 20% Efficiency. Sol. RRL, 4.10.1002/solr.201900499 ↗
70. You, Y., Tian, W., Min, L., Cao, F., Deng, K., and Li, L. (2020). TiO2/WO3 Bilayer as Electron Transport Layer for Efficient Planar Perovskite Solar Cell with Efficiency Exceeding 20%. Adv. Mater. Interfaces, 7.10.1002/admi.201901406 ↗
71. Boosting Perovskite Solar Cell Stability through a Sputtered Mo-Doped Tungsten Oxide (WOx) Electron Transport Layer10.1021/acs.energyfuels.3c03126 ↗
72. Fullerene modification of WO 3 electron transport layer toward high-efficiency MA-free perovskite solar cells with eliminated light-soaking effect
73. Improved electron transport in planar perovskite solar cells using TiO2, SnO2 and WO3 ultra-thin layers: A comparison on all single layer and bilayer structures10.1007/s12034-024-03170-y ↗
74. Lead free efficient perovskite solar cell device Optimization and defect study using Mg doped CuCrO2 as HTL and WO3 as ETL10.1016/j.solener.2022.07.013 ↗
75. Enhanced performance of double perovskite solar cell using WO3 as an electron transport material10.1007/s12596-022-01035-3 ↗
76. Improved performance of inorganic CsPbI3 perovskite solar cells with WO3/C60 UTL bilayer as an ETL structure: A computational study10.1088/1402-4896/ad3a2a ↗
77. WO3 nanoflakes for enhanced photoelectrochemical conversion10.1021/nn5053684 ↗
78. Optical properties of tungsten oxide thin films by non-reactive sputtering10.1016/j.tsf.2009.01.090 ↗
79. Yao, Y., Sang, D., Zou, L., Wang, Q., and Liu, C. (2021). A review on the properties and applications of WO3 nanostructure−based optical and electronic devices. Nanomaterials, 11.10.3390/nano11082136 ↗
80. Jing, H., Zhang, L., and Wang, H. (2013). Geometrically Tunable Optical Properties of Metal Nanoparticles. UV-VIS and Photoluminescence Spectroscopy for Nanomaterials Characterization, Springer Berlin Heidelberg.10.1007/978-3-642-27594-4_1 ↗
81. Lochtransportmaterialien für Perowskit-Solarzellen10.1002/ange.201601757 ↗
82. Song, D., Ramakrishnan, S., Xu, Y., and Yu, Q. (2023). Designing Effective Hole Transport Layers in Tin Perovskite Solar Cells, American Chemical Society.10.1021/acsenergylett.3c01410 ↗
83. Kim, H.-S., Lee, C.-R., Im, J.-H., Lee, K.-B., Moehl, T., Marchioro, A., Moon, S.-J., Humphry-Baker, R., Yum, J.-H., and Moser, J.E. (2012). Lead iodide perovskite sensitized all-solid-state submicron thin film mesoscopic solar cell with efficiency exceeding 9%. Sci. Rep., 2.10.1038/srep00591 ↗
84. Li, S., Cao, Y.L., Li, W.H., and Bo, Z.S. (2021). A Brief Review of Hole Transporting Materials Commonly Used in Perovskite Solar Cells, University of Science and Technology Beijing.10.1007/s12598-020-01691-z ↗
85. Copper Salts Doped Spiro-OMeTAD for High-Performance Perovskite Solar Cells10.1002/aenm.201601156 ↗
86. Chen, C., Zhang, W., Cong, J., Cheng, M., Zhang, B., Chen, H., Liu, P., Li, R., Safdari, M., and Kloo, L. (2017). Cu(II) Complexes as p-Type Dopants in Efficient Perovskite Solar Cells, American Chemical Society.10.1021/acsenergylett.6b00691 ↗
87. Suppression of Sn2+/Sn4+ oxidation in tin-based perovskite solar cells with graphene-tin quantum dots composites in active layer10.1016/j.nanoen.2021.106495 ↗
88. A graphene/ZnO electron transfer layer together with perovskite passivation enables highly efficient and stable perovskite solar cells10.1039/C8TA10857A ↗
89. Flower-like MoS 2 nanocrystals: A powerful sorbent of Li + in the Spiro-OMeTAD layer for highly efficient and stable perovskite solar cells10.1039/C8TA11800K ↗
90. A comparative study of different poly(3-hexylthiophene)-carbon based hole transport layers on the stability of perovskite solar cells prepared under ambient conditions
91. Hole-Transporting Materials for Perovskite Solar Cells Employing an Anthradithiophene Core10.1021/acsami.1c05890 ↗
92. Schileo, G., and Grancini, G. (2021). Lead or No Lead? Availability, Toxicity, Sustainability and Environmental Impact of Lead-Free Perovskite Solar Cells, Royal Society of Chemistry.10.1039/D0TC04552G ↗
93. Zhang, Q., Hao, F., Li, J., Zhou, Y., Wei, Y., and Lin, H. (2018). Perovskite Solar Cells: Must Lead Be Replaced—And Can It Be Done, Taylor and Francis Ltd.10.1080/14686996.2018.1460176 ↗
94. High-quality, Pb-free, pinhole-reduced MA0.7FA0.3SnBr3 perovskite photodetector via incorporating graphite10.1016/j.jallcom.2021.158990 ↗
95. Tin-based all-inorganic perovskite photodetectors fabricated by chemical vapor deposition10.1016/j.physe.2021.114843 ↗
96. Chen, X., Cheng, J., He, L., Zhao, L., Zhang, C., Pang, A., and Li, J. (2023). Hole Transport Materials for Tin-Based Perovskite Solar Cells: Properties, Progress, Prospects. Molecules, 28.10.3390/molecules28093787 ↗
97. Reducing Carrier Density in Formamidinium Tin Perovskites and Its Beneficial Effects on Stability and Efficiency of Perovskite Solar Cells10.1021/acsenergylett.7b00976 ↗
98. Lead-free halide perovskite solar cells with high photocurrents realized through vacancy modulation10.1002/adma.201401991 ↗
99. Properties and solar cell applications of Pb-free perovskite films formed by vapor deposition10.1039/C5RA21291J ↗
100. Lead-free solid-state organic-inorganic halide perovskite solar cells10.1038/nphoton.2014.82 ↗