Hot carrier solar cell as thermoelectric device

Konovalov, I.; Емельянов, В. М.

doi:10.1002/ese3.159

Cited by 14 publications

(9 citation statements)

References 24 publications

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“…This result is near to that obtained by experiment results 11,49 . The open circuit voltage is related to the band gap Eg via the following equation 50,51 :

V_{OC} = \frac{E_{g}}{q} - \frac{nkT}{q} ([], \ln ((), J_{italicSC}) - \ln ((), J_{0}))

…”

Section: Resultssupporting

confidence: 84%

Ferroelectric, quantum efficiency and photovoltaic properties in perovskite BiFeO ₃ thin films: First principle calculations and Monte Carlo study

2021

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Summary Monte Carlo simulations and the full‐potential linearized augmented plane wave (FP‐LAPW) method in the framework of density functional theory (DFT) are applied to investigate the quantum efficiency, ferroelectric, and photovoltaic properties. We have used the generalized Perdew Burke Ernzerhof gradient approximation (PBE‐GGA) as well as the Becke‐Johnson modified exchange potential (TB‐mBJ) to correct the gap's energy. The gap energy results of 2.5 eV obtained using mBJ are reasonable compared to the available experimental data (2.5 eV). The difference energy ∆E between the magnetic configurations EFM and EAFM of Fe was calculated. The BiFeO3 possesses the insulating ground state and G‐type antiferromagnetic ordering. The value of the magnetic moment was compared with the values obtained using experience and theory. The quantum efficiency (EQE), the short‐circuit current and open circuit voltage are investigated using ab‐initio calculations. The polarization, dielectric susceptibility and hysteresis loops are investigated using the Monte Carlo simulations for several thin films of BiFeO3.

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“…This result is near to that obtained by experiment results 11,49 . The open circuit voltage is related to the band gap Eg via the following equation 50,51 :

V_{OC} = \frac{E_{g}}{q} - \frac{nkT}{q} ([], \ln ((), J_{italicSC}) - \ln ((), J_{0}))

…”

Section: Resultssupporting

confidence: 84%

Ferroelectric, quantum efficiency and photovoltaic properties in perovskite BiFeO ₃ thin films: First principle calculations and Monte Carlo study

2021

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“…These two losses cause the maximum possible power conversion efficiency (PCE) of a single‐junction solar cell to lie below the Shockley‐Queisser limit . To overcome the limit, several new physical concepts have been proposed, such as multijunction solar cells, hot carrier solar cells, multiple exciton generation, and intermediate‐band solar cells . However, among these concepts, only multijunction cell design has successfully been proven to overcome the Shockley–Quiesser (S–Q) limit for solar cells.…”

Section: Introductionmentioning

confidence: 99%

Perovskite—a Perfect Top Cell for Tandem Devices to Break the S–Q Limit

et al. 2019

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Up to now, multijunction cell design is the only successful way demonstrated to overcome the Shockley–Quiesser limit for single solar cells. Perovskite materials have been attracting ever‐increasing attention owing to their large absorption coefficient, tunable bandgap, low cost, and easy fabrication process. With their rapidly increased power conversion efficiency, organic–inorganic metal halide perovskite‐based solar cells have demonstrated themselves as the most promising candidates for next‐generation photovoltaic applications. In fact, it is a dream come true for researchers to finally find a perfect top‐cell candidate in tandem device design in commercially developed solar cells like single‐crystalline silicon and CIGS cells used as the bottom component cells. Here, the recent progress of multijunction solar cells is reviewed, including perovskite/silicon, perovskite/CIGS, perovskite/perovskite, and perovskite/polymer multijunction cells. In addition, some perspectives on using these solar cells in emerging markets such as in portable devices, Internet of Things, etc., as well as an outlook for perovskite‐based multijunction solar cells are discussed.

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“…33 In essence, this is possible because the energy filters work as thermoelectric energy converters, using the temperature differential ∆TC to generate a thermoelectric voltage in addition to that provided by the quasi-Fermi level splitting ∆µ. 144,153 Following photoexcitation, there are two different stages at which hot carriers can be extracted, as shown in Fig. 7(b).…”

Section: Vb1 General Considerations On Energy Filter Designmentioning

confidence: 99%

Hot-carrier optoelectronic devices based on semiconductor nanowires

Fast

Aeberhard

Bremner

et al. 2021

Applied Physics Reviews

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In optoelectronic devices such as solar cells and photodetectors, a portion of electron-hole pairs are generated as so-called hot carriers with an excess kinetic energy that is typically lost as heat. The long standing aim to harvest this excess energy to enhance device performance has proven to be very challenging, largely due to the extremely short-lived nature of hot carriers. Efforts thus focus on increasing the hot carrier relaxation time, and on tailoring heterostructures that allow for hot-carrier extraction on short time-and length-scales. Recently, semiconductor nanowires have emerged as a promising system to achieve these aims, because they offer unique opportunities for heterostructure engineering as well as for potentially modified phononic properties that can lead to increased relaxation times. In this review we assess the current state of theory and experiments relating to hot-carrier dynamics in nanowires, with a focus on hot-carrier photovoltaics. To provide a foundation, we begin with a brief overview of the fundamental processes involved in hot-carrier relaxation, and how these can be tailored and characterized in nanowires. We then analyze the advantages offered by nanowires as a system for hot-carrier devices and review the status of proof-of-principle experiments related to hot-carrier photovoltaics. To help interpret existing experiments on photocurrent extraction in nanowires we provide modeling based on non-equilibrium Green's functions. Finally, we identify open research questions that need to be answered in order to fully evaluate the potential nanowires offer towards achieving more efficient, hotcarrier based, optoelectronic devices.

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Hot carrier solar cell as thermoelectric device

Cited by 14 publications

References 24 publications

Ferroelectric, quantum efficiency and photovoltaic properties in perovskite BiFeO ₃ thin films: First principle calculations and Monte Carlo study

Ferroelectric, quantum efficiency and photovoltaic properties in perovskite BiFeO ₃ thin films: First principle calculations and Monte Carlo study

Perovskite—a Perfect Top Cell for Tandem Devices to Break the S–Q Limit

Hot-carrier optoelectronic devices based on semiconductor nanowires

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Hot carrier solar cell as thermoelectric device

Cited by 14 publications

References 24 publications

Ferroelectric, quantum efficiency and photovoltaic properties in perovskite BiFeO 3 thin films: First principle calculations and Monte Carlo study

Ferroelectric, quantum efficiency and photovoltaic properties in perovskite BiFeO 3 thin films: First principle calculations and Monte Carlo study

Perovskite—a Perfect Top Cell for Tandem Devices to Break the S–Q Limit

Hot-carrier optoelectronic devices based on semiconductor nanowires

Contact Info

Product

Resources

About

Ferroelectric, quantum efficiency and photovoltaic properties in perovskite BiFeO ₃ thin films: First principle calculations and Monte Carlo study

Ferroelectric, quantum efficiency and photovoltaic properties in perovskite BiFeO ₃ thin films: First principle calculations and Monte Carlo study