Over 30% efficiency bifacial 4-terminal perovskite-heterojunction silicon tandem solar cells with spectral albedo

Trinh, Thanh Thuy; Park, Jinjoo; Pham, Duy Phong; Lee, Sunhwa; Binh, Huy; Dang, Nam Nguyen; Dao, Vinh Ai; Kim, Sangho; Yi, Junsin

doi:10.1038/s41598-021-94848-4

Cited by 43 publications

(24 citation statements)

References 23 publications

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“…[116] For the 4-T tandem devices, the rear irradiance absorbed by the c-Si bottom cells directly results in a linear increase in extra power generation because the two cells in tandem work separately. [120,121] For 2-T tandem devices, the rear irradiance boosts the photocurrent in the bottom cell and thus allows the relaxation of the current-match constrains in the tandem design to achieve a high PCE. [122] Bifacial perovskite/Si tandem solar cells allow the use of the perovskite top cell with a lower bandgap than that used in a monofacial tandem, enabling enhanced PCE and elongating stability due to reduced halide phase segregation.…”

Section: Bifacial Perovskite Tandem Solar Cellsmentioning

confidence: 99%

Perovskite Solar Cells Go Bifacial—Mutual Benefits for Efficiency and Durability

2021

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PV technologies need to advance further in terms of a substantial increase in PV module power generation, reduction in module prices, and improvement in long-term reliability, eventually realizing low levelized costs of electricity (LCOE) that are compatible with standard electricity prices in the energy market. The PV industry's future development necessitates increased attention to emerging techniques with the potential to achieve high power generation at low costs.Increasing the power output per unit area of solar panels at low additional manufacturing costs is crucial for further lowering the PV-generated electricity price. One of the simplest and inexpensive strategies for increasing the power output density of a solar panel is to harvest reflected and diffuse sunlight from the ground by employing bifacial designs. The concept of bifacial solar cells can date back to the 1960s, but the momentum to bring bifacial solar panels to the market has been gradually realized in the last decade as one of the latest technological advances in PV manufacturing. [4] The mainstream crystalline silicon (c-Si) PV module manufacturers are now producing bifacial silicon solar modules based on different cell technologies. The trend shows that bifacial solar cells and modules are increasingly important in today's PV market and may soon become the cost-effective PV standard. [5] Unlike c-Si solar cells, efficient bifacial designs have not been demonstrated in commercial inorganic thin-film PV technologies because the polycrystalline inorganic thin films suffer from short carrier lifetimes and high rear surface recombination, limiting their bifacial PV performance. Metal halide perovskite solar cells (PSCs) have generated great interest in the PV research and industry, owing to their fast-growing power conversion efficiencies (PCEs), [6] outstanding optoelectronic properties, [7] ease of production, [8] low estimated manufacturing costs, [9] and readiness to take steps toward commercialization. [10] Within a decade, PSCs have rapidly evolved from a newcomer to a leading competitor to rival other established PV technologies.The development of PSCs opens up a golden opportunity to realize efficient bifacial thin-film solar cells. Figure 1 depicts the bifacial architecture for PSCs, summarizes the unique optoelectronic properties of perovskites that enable high bifacial performance, and highlights the advantages of bifacial Bifacial solar cells hold the potential to achieve a higher power output per unit area than conventional monofacial devices without significantly increasing manufacturing costs. However, efficient bifacial designs are challenging to implement in inorganic thin-film solar cells because of their short carrier lifetimes and high rear surface recombination. The emergence of perovskite photovoltaic (PV) technology creates a golden opportunity to realize efficient bifacial thin-film solar cells, owing to their outstanding optoelectronic properties and unique features of device physics. More importantly, transparent cond...

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Section: Bifacial Perovskite Tandem Solar Cellsmentioning

confidence: 99%

Perovskite Solar Cells Go Bifacial—Mutual Benefits for Efficiency and Durability

2021

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“…Metal halide perovskites (MHP) have established a new photovoltaic (PV) technology for large solar energy conversion efficiencies with low-cost, solution-processed materials. − The MHP can be described as ABX 3 where A = monovalent cations (i.e., methyl ammonium, MA; formamidinium, FA), B = divalent cations (i.e., Pb 2+ ), and X = halide anions (i.e., I – ). It is possible to use combinations of cations (MA, FA, Cs, and Rb) and anions (I, Br) to modify the band gap, efficiency, and stability for different types of applications. − For example, MAPbBr 3 forms a semiconductor with a wide band gap (2.3 eV) useful for tandem solar cells in combination with Si. , In addition, the external interfaces play a very important role, and improvement of the charge extraction layers has enhanced the charge external collection and stability of the devices. , …”

Section: Introductionmentioning

confidence: 99%

Transition from Capacitive to Inductive Hysteresis: A Neuron-Style Model to Correlate I–V Curves to Impedances of Metal Halide Perovskites

2022

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Metal halide perovskite (MHP) devices often show different types of hysteresis in separate voltage domains. At low voltage, the impedance response is capacitive, and the cell gives regular hysteresis. At high voltage, the hysteresis is inverted, corresponding to an inductive response that causes a negative capacitance feature. We calculate the hysteresis current due to a chemical inductor model, and we show that the current is inversely proportional to the voltage scan rate. We formulate a general dynamical model for the solar cell response in the style of neuronal models for the action potential, based on a few differential equations. The model allows us to track the transition from capacitive to inductive properties, both by impedance spectroscopy and current−voltage measurements at different voltage sweep rates. We obtain a correlation of the time constants for the capacitor and the inductor. We interpret the origin of the low-frequency features in terms of ion-controlled surface recombination. This explains the strong correlation of the low-frequency capacitance and inductor, as both originate from the same mechanism. The methodology derived in this paper provides great control over the dynamic properties of metal halide perovskite solar cells, even in cases in which there are qualitative changes of the solar cell current−voltage response over a broad voltage range.

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“…The absorber of the perovskite cell was made to remain stable when exposed to illumination via a series of very fast extraction of holes and minimization of nonradiative recombination at selected hole interfaces. Kim et al 16 designed and developed a bifacial 4-terminal tandem perovskite/Si heterojunction solar cell that generated 30% efficiency. The efficiency recorded by the hybrid bifacial solar cell was greater than the 29.43% Schockley-Quiesser limit for crystalline-based Silicon solar cells.…”

Section: Introduction 1| General Overview On Photovoltaicsmentioning

confidence: 99%

Thermodynamic modeling of a spectrum split perovskite/silicon solar cell hybridized with thermoelectric devices

Eke

Ibeagwu

Okoroigwe

et al. 2022

Intl J of Energy Research

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To facilitate the attainment of higher performance in the tandem perovskite/ silicon solar cell, this work seeks to conduct the thermodynamic modeling and analysis of a spectrum splitting tandem perovskite/silicon solar hybridized with thermoelectric (TE) devices. A dichroic beam splitter is employed as the solar concentrator for the utilization of the entire solar spectrum and the effects of temperature dependency and leg geometry alteration are considered in the TE device pins. Additionally, a TE cooler (TEC) is lapped behind the backplate of the tandem solar cell to reduce overheating and allow for higher power generation from the hybrid system. Finally, novel equations are developed to study the effects of varying the halide composition of the perovskite on the overall system performance. Among several fascinating results obtained, it was disclosed that increasing the bromine composition only improved the system's performance when a halide composition of 0.2 was used for hybrid organic-inorganic perovskite thickness ranging from 300 to 400 nm. It was also forecasted that as the solar cells are exposed to higher concentrated solar irradiances, the effects of increasing the halide composition on the system's performance will become more notable. Additionally, utilizing a TEC to maintain the tandem solar cell backplate temperature at 293K is not beneficial to the system's performance when a beam splitter is used. Finally, it was found that the highest system efficiency of 42% was obtained at a split wavelength of 800 nm which is considerably higher than the 23.6% reported for standalone perovskite/Si. These results are sufficient to provide useful insights regarding the operation of spectrum splitting tandem perovskite/silicon solar cells with TE devices.

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Over 30% efficiency bifacial 4-terminal perovskite-heterojunction silicon tandem solar cells with spectral albedo

Cited by 43 publications

References 23 publications

Perovskite Solar Cells Go Bifacial—Mutual Benefits for Efficiency and Durability

Perovskite Solar Cells Go Bifacial—Mutual Benefits for Efficiency and Durability

Transition from Capacitive to Inductive Hysteresis: A Neuron-Style Model to Correlate I–V Curves to Impedances of Metal Halide Perovskites

Thermodynamic modeling of a spectrum split perovskite/silicon solar cell hybridized with thermoelectric devices

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