Nitride/Perovskite Tandem Solar Cell with High Stability: Analytical Study of Adjusting Current Matching Condition

Abstract

One of the essential challenges of tandem solar cells is designing and adjusting the current-matched tandem structures with high efficiency and stability. Nitride-based wide band gap semiconductors, owing to their high stability and high resistance against the cosmic rays, are appropriate elements to apply as the top cell of tandem solar cells. On the other hand, the organic-inorganic hybrid perovskites are emerging materials with exclusive electronic properties such as tunable band gap, low cost, simple manufacturing process, and efficient charge transport properties, making them capable candidates to be used in tandem layered structures. The aim of this paper is to adjust and optimize the performance of a two-terminal tandem solar cell consisting of InxGa1-xN as the top cell and a FAPbIyBr3-y as the bottom cell. We have studied the effect of different practical parameters such as the indium molar of the top cell, iodine molar of the bottom cell, the thickness of each layer, threading dislocation density of InxGa1-xN, and surface texturing effect on the performance of the two-terminal tandem structure. Because of the prominence of current matching problem in two-terminal tandem structures, we have determined the optimum situation for maximum light harvesting along with the minimum value of current matching factor. In the optimum situation, the current matching factor of 0.15 mA/cm2 leads to the power conversion efficiency of 25.17% for the device.

Stability and Performance Enhancement of Perovskite Solar Cells: A Review

“…The power conversion efficiency of 25.17% for the minimum value of the current matching factor of 0.15 mA/cm 2 has been achieved. The results indicate the potential for efficient PSC in practical application [66].…”

“…The encapsulated device retained 76% of the initial Jsc after one year of aging and 8 h UV irradiation, while for TiO 2 , only 12% of its initial Jsc was retained. The work outcomes show great potential for MZO ETL in perovskite application [66].…”

“…They achieved PCE of ≈31% with a realistic V OC of 2.16 V, an FF of ≈82.2%, and a J SC of 17.65 mA/cm 2 . ALD AZO also played a fencing role to intercept oxygen and water from entering the device, resulting in the significantly improved stability of the tandem device [66].…”

“…As a result, the morphological stability of the Spiro-MeOTAD film with a higher Tg was observed. Instead of inefficient hole extraction and decline, Rrec, as in LiTFSI-based Spiro-MeOTAD Zn(TFSI) 2 , maintained photovoltaic performance, despite the development of pernicious pinholes [66].…”

“…A highly efficient device with a PCE of 23.36% and improved thermal stability over 1400 h operation under 80 • C was presented by employing benzamidine hydrochloride as a spacer [66]. The same shading scheme is used as in (A).…”