Ideal efficiency of resonant cavity-enhanced perovskite solar cells

Abstract

Perovskite solar cells (PSCs) have attracted significant attention in recent years due to the rapid increase in device efficiency (reaching over 25% in 2019), ease of fabrication, and the potential to produce low-cost photovoltaic modules. In this paper we have determined the ideal power conversion efficiency and quantum efficiency of PSCs with the p-i-n device structure, where p is the hole transport layer, i is the perovskite absorber layer, and n is the electron transport layer. The absorption of incident light occurs in a thin perovskite layer, the thickness of which is comparable to the wavelength of absorbed light. We take into account interference effects when the PSC structure is represented by a Fabry-Perot resonator. The optical flux within the absorbing layer is calculated as a function of the spatial coordinate (in the direction of the layer thickness), for a certain wavelength, at the normal incident light. The power quantum efficiency is calculated assuming that the incident light source is a blackbody at the temperature of the Sun, as well as for the AM1.5g standard solar spectrum. The results obtained by using the derived expressions that take into account the interference effects are compared with those obtained by neglecting these effects.

Optical Resonator Enhanced Photovoltaics and Photocatalysis: Fundamental and Recent Progress

“…Besides organic photovoltaic devices, other materials such as quantum dots and perovskites have emerged as promising materials for photovoltaic devices. [19,[123][124][125][126] Figure 4a shows a quantum dot solar cell integrated with FP cavity, in which the top and bottom electrodes serve as mirrors to form FP cavity resonance. [127] By exploiting optical properties of FP cavity, the resonance wavelength range and resonant absorption can be tuned by adjusting the thickness of the active layer.…”

In-Depth Analysis on the Fabry-Perot Effect of Cs2AgBiBr6 Double Perovskite-Based Solar Cells via Optical Path Length Modulation

“…Another strategy to improve light trapping in solar cell is to use the Fabry-Perot (F-P) effect. The F-P cavity is a structure in which two reflectors with high reflectance are placed in parallel at a certain distance, enhancing the optical absorption [26][27][28][29]. The F-P cavity is used to analyze the interference phenomenon of light acting between reflecting mirrors [30][31][32].…”

“…As a result, the optical path length (OPL) of the cell increases, and the light absorption ability is enhanced [33,34]. Djurić and Jokić studied about F-P cavity mode PSC with p-i-n device structure, then investigated the maximum efficiency of PSC using the theoretical backgrounds, and explained the interference effects of PSC International Journal of Energy Research structure represented by a F-P resonator [29]. In conclusion, analysis of the F-P effect within the Cs 2 AgBiBr 6 double perovskite with large indirect band gap-based solar cell is particularly significant for enhancing the optical absorption and light trapping.…”

Dielectric-Optical Switches: Photoluminescent, EPR, and Magnetic Studies on Organic–Inorganic Hybrid (azetidinium)2MnBr4

“…Currently, solar cells, based on methylammonium lead halide, are promising candidates for the cheap preparation from solution and highly efficient solar cells with short energy payback time. Since the first reports appeared, certified power conversion efficiency has now exceeded 25% 5 , 8 , 9 and even reaching the value of 30% 10 in monolithic perovskite tandem solar (photovoltaic) cells. Additionally, lead halide perovskites with exceptional optical properties have been used as a phosphor component in the light-emitting diode (LED) applications, promising to replace traditional rare-earth phosphors due to their earth-occurring elements and low-cost synthesis.…”