Insertion of a thin highly doped crystalline layer in silicon heterojunction solar cells: Simulation and perspectives towards a highly efficient cell concept

Carrere, Tristan; Varache, Renaud; Muñoz, D.; Kleider, Jean‐Paul

doi:10.1063/1.4908189

Cited by 11 publications

(5 citation statements)

References 22 publications

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“…HHJ and SHJ cells have similar J SC values (variability is linked to screen printing process). This is consistent with numerical simulations where no short circuit current loss is expected in rear emitter HHJ cells compared to the reference SHJ cells [23].…”

Section: Solar Cells Resultssupporting

confidence: 91%

“…These features have been evidenced to originate from the additional field effect passivation brought by the (p + ) c-Si region. Additionally, the HHJ cell fill factor is also improved and less influenced by interface defects [23]. Such improvements were also observed by simulations by other authors on similar homo-heterojunction cells with insertion of a highly doped crystalline layer at the emitter of either n-type or p-type silicon solar cells [24,25].…”

Section: Introductionsupporting

confidence: 76%

“…For D it above 10 9 cm −2 , the HHJ cell has a higher V OC value than the SHJ cell. This was evidenced to originate directly from a better field effect passivation that can hinder recombination through interface defects [23]. For D it below 10 9 cm −2 recombination at the emitter heterointerface is no longer the limiting recombination path and does not limit the solar cell performance.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

“…In previous numerical simulation studies [23], it was shown that, compared to the SHJ cell, the HHJ cell exhibits a higher open-circuit voltage and is less sensitive to interface defects. These features have been evidenced to originate from the additional field effect passivation brought by the (p + ) c-Si region.…”

Section: Introductionmentioning

confidence: 98%

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Homo-heterojunction concept: From simulations to high efficiency solar cell demonstration

Carrere

Lachaume

Thai

et al. 2018

Solar Energy Materials and Solar Cells

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A B S T R A C TThe novel solar cell architecture called silicon homo-heterojunction (HHJ) cell is investigated combining experimental and simulation approaches. This structure intends to overcome the limitations of the silicon heterojunction technology regarding the amorphous/ crystalline silicon interface (p) a-Si:H/(i) a-Si:H /(n) c-Si) by the addition of a (p + ) c-Si layer at the hetero-interface. First, the added (p + ) c-Si layer is experimentally investigated using boron implantation through the realization and characterization of symmetric solar cell precursors. An adapted process flow taking into account the (p + ) c-Si profile optimization, the annealing effects on substrate degradation, and the impact on surface passivation, is deeply explored. Then, large area solar cells are processed and the solar cell performance are discussed in view of the data obtained on precursors and with the help of realistic numerical simulations. Overall, we observe that the HHJ solar cells exhibit a small performance improvement compared to reference heterojunction cells. In particular, a gain in the fill factor is observed, which is shown to be originated from both an improvement in field effect and a decrease of the vertical series resistance from the a-Si:H layers. The experimental data obtained on the processed homo-heterojunction solar cells confirm that this technology can lead to improved conversion efficiencies compared to the high quality reference heterojunction solar cells.

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Section: Solar Cells Resultssupporting

confidence: 91%

Section: Introductionsupporting

confidence: 76%

Section: Simulation Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Homo-heterojunction concept: From simulations to high efficiency solar cell demonstration

Carrere

Lachaume

Thai

et al. 2018

Solar Energy Materials and Solar Cells

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“…The solar cell architectures defined consist of transparent conductive oxide/ buffer/absorber/hole transport material. The basic physics and device parameters for the simulated cells are obtained from literature [6][7][8]. The parameters for cells heterojunction layers are summarized in Table 1.…”

Section: Introductionmentioning

confidence: 99%

The effect of the recombination mechanisms location on the temperature sensitivity of thin-film photovoltaic cells

et al. 2019

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Thin film solar cells temperature sensitivity and impact of the main recombination mechanism location are investigated in this paper. The main mechanisms in bulk and at the heterojunction interface are discriminated. Using a 1D simulation software, “Solar Cell Capacitance Simulator” (SCAPS), we observed a higher temperature coefficient of open circuit voltage (Voc) for cells with main recombination centers at the interface than the one with main recombination centers in volume. Furthermore, an LTSpice module model is used to visualize the effects of the recombination centers' location on the performance ratios of the modules. The results show more degradation for the ratios performance of cells with the main recombination mechanisms at the interface than those in volume.

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An analytical approach for modeling of high-efficiency crystalline silicon solar cells with homo–hetero junctions

Bashiri

Karami

Nejad

2020

Materials Science in Semiconductor Processing

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Insertion of a thin highly doped crystalline layer in silicon heterojunction solar cells: Simulation and perspectives towards a highly efficient cell concept

Abstract: International audienc

Cited by 11 publications

References 22 publications

Homo-heterojunction concept: From simulations to high efficiency solar cell demonstration

Homo-heterojunction concept: From simulations to high efficiency solar cell demonstration

The effect of the recombination mechanisms location on the temperature sensitivity of thin-film photovoltaic cells

An analytical approach for modeling of high-efficiency crystalline silicon solar cells with homo–hetero junctions

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