Performance optimization of homojunction perovskite solar cells by numerical simulation

Li, Guijin; Guo, Fei; Zhou, Xilin; Li, Xue; Huang, Xiaohua; Xiao, Youpeng

doi:10.1016/j.spmi.2021.106922

Cited by 7 publications

(3 citation statements)

References 16 publications

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“…Numerical simulations are fundamental in testing the feasibility and predicting the performance of a new device and can be utilized to further understand the characteristics of perovskite homojunctions. For performance optimization, Sengar et al [38] used experimentally verified device models to study the effects of junction thickness, electric field strength and junction defect density on device performance. A stronger electric field in the homojunction can reduce the carrier recombination rate.…”

Section: Theoretical Simulation Of Perovskite Homojunctionsmentioning

confidence: 99%

Homojunction perovskite solar cells: opportunities and challenges

Cui¹,

Qu²,

Zhang³

et al. 2022

Energy Mater

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Organometallic halide perovskites have rapidly become promising materials as a result of their outstanding properties in high-efficiency and low-cost next-generation solar cells. Perovskite materials can be adjusted to be p- or n-type by defect engineering through, for example, the self-doping method by controlling the precursor compositions and process conditions. Recently, a p-type perovskite/n-type perovskite homojunction has been proposed and constructed, which provides a possibility for the design of a novel type of perovskite solar cell (PSC). Following a brief overview of the physical fundamentals of perovskite homojunctions, a detailed discussion of the promising progress of recently reported homojunction PSCs is presented here, including theoretical simulations, extrinsic and interfacial doping and graded structures. Furthermore, the opportunities regarding higher doping concentrations, simpler device architectures, ion migration inhibition and device stability are discussed. Finally, an outlook that offers insights into the future development of highly efficient and stable homojunction PSCs is provided.

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Section: Theoretical Simulation Of Perovskite Homojunctionsmentioning

confidence: 99%

Homojunction perovskite solar cells: opportunities and challenges

Cui¹,

Qu²,

Zhang³

et al. 2022

Energy Mater

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“…Moreover, the defect density of the p-type PVK and the thickness of absorber have been optimized. The efficiency of an optimized cell can reach 27.10% [109], demonstrating the substantial performance of the homojunction cell. In addition, He et al reported and analyzed the effect of doping perovskite absorbers in a p-n homojunction (Figure 7a) using three different types of HTL: NiO, Si, and Spiro-OMeTAD [110].…”

Section: B Progress In Modeling and Simulation Of Pvk Tfscsmentioning

confidence: 93%

“…Utilizing CuAlO 2 as an HTL for the inverted p-n homojunction cell resulted in a PCE of 16.48%. Furthermore, Li et al thoroughly analyzed the impact of various materials for ETLs and HTLs, absorber layer thickness, and interface defect concentrations on the performance of perovskite homojunction TFSCs [109]. They optimized the performance by using TiO2 and Spiro-OMeTAD as ETL and HTL materials, respectively.…”

Section: B Progress In Modeling and Simulation Of Pvk Tfscsmentioning

confidence: 99%

Comprehensive Review on Thin Film Homojunction Solar Cells: Technologies, Progress and Challenges

et al. 2023

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With the aim of achieving high efficiency, cost-effectiveness, and reliability of solar cells, several technologies have been studied. Recently, emerging materials have appeared to replace Si-based cells, seeking economic fabrication of solar cells. Thin-film solar cells (TFSCs) are considered strong candidates for this mission, specifically perovskite-based solar cells, reporting competitive power convergence efficiencies reaching up to 25.7%. Substantial efforts have been invested in experimental and research work to surpass the Si-based cells performance. Simulation analysis is a major tool in achieving this target by detecting design problems and providing possible solutions. Usually, a TFSC adopts p-i-n heterojunction architecture by employing carrier transport materials along with the absorber material in order to extract the photogenerated electrons and holes by realizing a built-in electric field. Eventually, this dependency of conventional heterojunction TFSCs on carrier transport layers results in cost-ineffective cells and increases the possibility of device instability and interface problems. Thus, the design of p-n homojunction TFSCs is highly desirable as an essential direction of structural innovation to realize efficient solar cell operation. In this review, a summary of the fundamentals of TFSC materials, recent design and technology progress, and methodologies for improving the device performance using experimental research studies will be discussed. Further, simulation analysis will be provided by demonstrating the latest research work outcomes, highlighting the major achievements and the most common challenges facing thin film homojunction solar cell structures and the methods to improve them.

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