Band structure adjustment of solar cells by gradient doping

Weichao, Wang; Ma, Ben; Long, Tian; Zhu, Jianzhuo

doi:10.1016/j.mssp.2015.05.031

Cited by 12 publications

(6 citation statements)

References 19 publications

(26 reference statements)

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“…65 Also, gradient doping is feasible. 55,[66][67][68] In 2013, Abdi et al achieved 4.9% STH eff. for a metal oxide-based, stand-alone solar water splitting device, based on a photoanode from BiVO 4 in a tandem conguration with c-Si.…”

Section: Dopingmentioning

confidence: 99%

The role of selective contacts and built-in field for charge separation and transport in photoelectrochemical devices

Schleuning

Ahmet

Krol

et al. 2022

Sustainable Energy Fuels

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Section: Dopingmentioning

confidence: 99%

The role of selective contacts and built-in field for charge separation and transport in photoelectrochemical devices

Schleuning

Ahmet

Krol

et al. 2022

Sustainable Energy Fuels

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“…All these are harmful to the carrier transportation and then the solar cell performance. [26] Figure 5 shows the current density voltage curves with and without doping concentration optimizations of the n-and p-layer perovskite (see lines 1 and 2 in Fig. 5).…”

Section: Influences Of Doping Concentration Of N- P-layer Perovskitementioning

confidence: 99%

Simulation design of P–I–N-type all-perovskite solar cells with high efficiency

Weichao

2017

Chinese Phys. B

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According to the good charge transporting property of perovskite, we design and simulate a p-i-n-type all-perovskite solar cell by using one-dimensional device simulator. The perovskite charge transporting layers and the perovskite absorber constitute the all-perovskite cell. By modulating the cell parameters, such as layer thickness values, doping concentrations and energy bands of n-, i-, and p-type perovskite layers, the all-perovskite solar cell obtains a high power conversion efficiency of 25.84%. The band matched cell shows appreciably improved performance with widen absorption spectrum and lowered recombination rate, so weobtain a high J sc of 32.47 mA/cm 2 . The small series resistance of the all-perovskite solar cell also benefits the high J sc . The simulation provides a novel thought of designing perovskite solar cells with simple producing process, low production cost and high efficient structure to solve the energy problem.

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“…A suitable ETL should exhibit proper band alignment with the perovskite layer, ensuring that the transport of electrons is promoted while holes are hindered [22][23][24]. In order to achieve good band alignment between the perovskite layer and ETL, researchers have proposed many methods for interface engineering [25,26], such as doping the ETL with other elements to reach the optimal band alignment with the perovskite layer [22,23], adjusting the band structure via gradient doping [27], inserting a buffer layer between the perovskite layer and the ETL [28], or adjusting the electron affinity of the ETL to achieve proper band matching [29].…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis on the Effect of the Conduction Band Offset in Dion–Jacobson Perovskite Solar Cells

Gan,

Qiu,

Yan

et al. 2023

Energies

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Benefiting from the advantages of a high absorption coefficient, a long charge diffusion length, excellent carrier mobility, and a tunable bandgap, three-dimensional (3D) metal halide perovskites exhibit great potential for application in solar cells. However, 3D perovskite solar cells (PSCs) often suffer from poor long-term stability against moisture, heat, and light. To address this issue, reducing the dimension of perovskite and forming two-dimensional (2D) perovskites can be effective in slowing down the oxidation of the perovskite film and significantly improving device stability. In this study, 2D PSCs were designed with glass/FTO/TiO2/Dion–Jacobson (DJ) perovskite/NiOx/Au structures, based on the solar cell simulation software SCAPS. The absorption layers employed in the study included PeDAMA2Pb3I10, PeDAMA3Pb4I13, PeDAMA4Pb5I16, and PeDAMA5Pb6I19. The influence of the conduction band offset (CBO) variation in the range of −0.5 to 0.5 eV on cell performance was explored through a numerical simulation. The simulation results indicate that the open-circuit voltage and fill factor continue to increase, whereas the short-circuit current density remains almost unchanged when the CBO increases from −0.5 eV to 0 eV. The devices exhibit better performance when the value of the CBO is positive and within a small range. For DJ PSCs, controlling the CBO within 0.1–0.4 eV is conducive to better cell performance.

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Band structure adjustment of solar cells by gradient doping

Cited by 12 publications

References 19 publications

The role of selective contacts and built-in field for charge separation and transport in photoelectrochemical devices

The role of selective contacts and built-in field for charge separation and transport in photoelectrochemical devices

Simulation design of P–I–N-type all-perovskite solar cells with high efficiency

Numerical Analysis on the Effect of the Conduction Band Offset in Dion–Jacobson Perovskite Solar Cells

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