Maximizing the performance of single and multijunction MA and lead-free perovskite solar cell

Azadinia, M.
Ameri, Mohsen
Ghahrizjani, R.T.
Fathollahi, M.
Finding a highly stable and appropriate perovskite solar cell with optimum design parameters is crucial for being included as the top cell in tandem structure, with Si as the bottom cell, to realize the power conversion efficiencies (PCEs) over the limits imposed by Shockley-Queisser theory. Here, we quantize the performance of methylammonium (MA) and lead (Pb)-free all-inorganic cesium tin-germanium triiodide (CsSnxG1-xI3) by combining CsSnI3 (Eg = 1.31 eV) and CsGeI3 (Eg = 1.63 eV) perovskites for standalone and integrated multijunction structure in tandem with Silicon solar cell. The maximum PCE of the standalone cell is shown to be about 16.5% and 13.6% for n-i-p and p-i-n structures, respectively, almost twice the present PCE value obtained in the experiment. Optimum perovskite absorber bandgap of 1.38 eV and electron affinity of 4eV with composition ratio of X = 0.25 (CsSn1-xGexI3) in both n-i-p and p-i-n structures are obtained. The optimum perovskite absorber thickness of 600 nm leads to the highest PCEs. The effect of doping concentration and defect density on absorber was also explored. Finally, four-terminal and six-terminal tandem solar cells are designed and optimized. With CsSn1-xGexI3 perovskite thickness of 385 nm and bandgap of 1.56 eV in the four-terminal, it demonstrates the high PCE of 26.9%. Interestingly, with FASnI2Br (Eg = 1.68 eV and thickness = 200 nm) and CsSn0.75Ge0.25I3 (Eg = 1.38 eV and thickness = 200 nm) as the absorber layer of the top cell and middle cell in the six-terminal PSC, respectively, the superior PCE of 27.8% is realized for MA and Pb-free six-terminal perovskite/Si tandem solar cell. This work provides a route toward the development of highly stable all-inorganic perovskite/Si tandem solar cells.
Materials Today Energy


Selective emitter formation via single step doping through laser patterned mask oxide layer for monocrystalline silicon solar cells
Çiftpınar, Emine Hande; Turan, Raşit; Department of Physics (2014)
Selective emitter is one of the new approaches for higher efficiency solar cells. Although selective emitter cells could be processed by several different methods such as; etch back process, laser doping, ion implantation, doping paste, a different method based on diffusion through a laser patterned oxide layer was studied in this thesis. Utilization of pattern oxide layer as a diffusion barrier enables to obtain selective emitter profile via single step doping which reduces overall production cost and time...
Dual-band high-frequency metamaterial absorber based on patch resonator for solar cell applications and its enhancement with graphene layers
Ustunsoy, Mehmet Pasa; Sabah, Cumali (2016-12-05)
In this paper, a dual-band high-frequency metamaterial absorber based on patch resonator is designed and analyzed for solar cells. In order to obtain a metamaterial absorber, metal-semiconductor-metal layers are combined. The results of the designed structure are shown in the infrared and visible ranges of solar spectrum. Structural parameters and dimensions of the device have a significant importance on the performance of the designed absorber. The simulations are carried out with full-wave electromagnetic...
Simulation Studies of Hole Textured and Planar Microcrystalline Silicon Solar Cell at Different Zenith Angle
Zainab, Sana; Hussain, Shahzad; Altinoluk, Serra H.; Turan, Raşit (2017-09-23)
Efficiency of solar cell greatly depends on its interaction with input solar irradiance. For highly efficient solar cell, absorption of input light should be maximum at all angles. Different surface texturing techniques like pyramid texturing, cone texturing, pillar texturing have been used to increase absorption of light in solar cell. Micro-hole Surface texturing is getting popular in absorption of solar radiation at higher zenith angle. In this paper, effect of varying zenith angle on hole textured solar...
Interface passivation of perovskite solar cells with novel cations
Çel, Gülsevim Bensu; Günbaş, Emrullah Görkem; Yerci, Selçuk; Department of Micro and Nanotechnology (2022-8)
Interface engineering and surface defect passivation play an important role in the development of state-of-the-art perovskite solar cells. Forming an additional two-dimensional (2D) layer on top of the primary perovskite absorber after treatment with organic spacers not only passivates defects and improves the device performance, but also enhances stability. In this study, two novel cations, that are 2,6-methoxy-phenylethyl ammonium iodide (2,6-MeO-PEAI) and 3,5-methoxy-phenylethyl ammonium iodide (3,5-MeO-...
Hybrid Vapor-Solution Sequentially Deposited Mixed-Halide Perovskite Solar Cells
Soltanpoor, Wiria; Dreessen, Chris; Şahiner, Mehmet Cem; Susic, Isidora; Afshord, Amir Zarean; Chirvony, Vladimir S.; Boix, Pablo P.; Günbaş, Emrullah Görkem; Yerci, Selçuk; Bolink, Henlk J. (2020-08-01)
The recent sky-rocketing performance of perovskite solar cells has triggered a strong interest in further upgrading the fabrication techniques to meet the scalability requirements of the photovoltaic industry. The integration of vapor deposition into the solution process in a sequential fashion can boost the uniformity and reproducibility of the perovskite solar cells. In addition, mixed-halide perovskites have exhibited outstanding crystallinity and higher stability compared with iodide-only perovskite. An...
Citation Formats
M. Azadinia, M. Ameri, R. T. Ghahrizjani, and M. Fathollahi, “Maximizing the performance of single and multijunction MA and lead-free perovskite solar cell,” Materials Today Energy, pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: