Study of the Surface Recombination Velocity for Ultraviolet and Visible Laser-Fired Contacts Applied to Silicon Heterojunction Solar Cells

Morales-Vilches, Anna Belen; Voz, C.; Colina, M.; Muñoz-Martín, D.; Martı́n, I.; Ortega, Pablo; Lopez-Rodriguez, Gema; Molpeceres, C.; Alcubilla, R.

doi:10.1109/jphotov.2015.2417757

Cited by 4 publications

(2 citation statements)

References 20 publications

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“…The photo-generated carrier rates are reduced due to increased SRV. SRV impacts both the dark and illumination performance of the solar cell [31][32][33][34][35]. Throughout this subsection, the impact of various n+ emitter surface treatments on both optical and electrical performance parameters of the conventional and flipped structures is illustrated.…”

Section: Effect Of Different N+ Sidewall Emitter Surface Treatmentsmentioning

confidence: 99%

Performance Investigation of a Proposed Flipped npn Microstructure Silicon Solar Cell Using TCAD Simulation

et al. 2022

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This work aims at inspecting the device operation and performance of a novel flipped npn microstructure solar cell based on low-cost heavily doped silicon wafers. The flipped structure was designed to eliminate the shadowing effect as applied in the conventional silicon-based interdigitated back-contact cell (IBC). Due to the disappearance of the shadowing impact, the optical performance and short-circuit current density of the structure have been improved. Accordingly, the cell power conversion efficiency (PCE) has been improved in comparison to the conventional npn solar cell microstructure. A detailed analysis of the flipped npn structure was carried out in which we performed TCAD simulations for the electrical and optical performance of the flipped cell. Additionally, a comparison between the presented flipped microstructure and the conventional npn solar cell was accomplished. The PCE of the conventional npn structure was found to be 14.5%, while it was about 15% for the flipped structure when using the same cell physical parameters. Furthermore, the surface recombination velocity and base bulk lifetime, which are the most important recombination parameters, were studied to investigate their influence on the flipped microstructure performance. An efficiency of up to 16% could be reached when some design parameters were properly fine-tuned. Moreover, the impact of the different physical models on the performance of the proposed cell was studied, and it was revealed that band gap narrowing effect was the most significant factor limiting the open-circuit voltage. All the simulations accomplished in this analysis were carried out using the SILVACO TCAD process and device simulators.

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Section: Effect Of Different N+ Sidewall Emitter Surface Treatmentsmentioning

confidence: 99%

Performance Investigation of a Proposed Flipped npn Microstructure Silicon Solar Cell Using TCAD Simulation

et al. 2022

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“…In fact, by considering the particular grid design of the silver electrode and the sheet resistance of the PEDOT:PSS films, the contribution of the front electrode to the series resistance could be estimated in less than 0.6 Ω·cm 2 [28]. On the rear side, the optimized point contact structure reduces the series resistance of the back contact to only 0.2 Ω·cm 2 [18], [29]. Therefore, over an 80% of the measured R S should be attributed to the relatively high contact resistivity of PEDOT:PSS with silver.…”

Section: (D) and (E)]mentioning

confidence: 99%

PEDOT:PSS as an Alternative Hole Selective Contact for ITO-Free Hybrid Crystalline Silicon Solar Cell

Mahato

Gerling

Voz

et al. 2016

IEEE J. Photovoltaics

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Organic-inorganic hybrid solar cells were fabricated by spin coating of conductive polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) as hole selective contact upon textured n-type crystalline silicon wafers. Two different PEDOT:PSS commercial products (Clevios HTL Solar and PH1000) were compared, enhancing their conductivity and wettability by addition of dimethyl sulfoxide cosolvent and Capstone FS-31 surfactant. Transmission line measurements (TLM) revealed that the sheet resistance of the PEDOT:PSS layer was comparable with that of conventional Indium-Tin oxide (ITO) electrodes, allowing its use as a conductive transparent layer in an ITO-free solar cell. Quasi-steady-state photoconductance measurements revealed an implied open-circuit voltage of 644 mV for HTL Solar, which is equivalent to a saturation current density of 255 fA/cm 2 . In general, the performance of HTL Solar was better than PH1000, exhibiting power conversion efficiency (1 × 1 cm 2 cell area) of 11.6%, as compared with 8.5%.Index Terms-Crystalline silicon (c-Si), hole selective contact, hybrid solar cell, poly(3, 4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS).

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Silicon solar cells with heterojunction emitters and laser processed base contacts

et al. 2017

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Study of the Surface Recombination Velocity for Ultraviolet and Visible Laser-Fired Contacts Applied to Silicon Heterojunction Solar Cells

Cited by 4 publications

References 20 publications

Performance Investigation of a Proposed Flipped npn Microstructure Silicon Solar Cell Using TCAD Simulation

Performance Investigation of a Proposed Flipped npn Microstructure Silicon Solar Cell Using TCAD Simulation

PEDOT:PSS as an Alternative Hole Selective Contact for ITO-Free Hybrid Crystalline Silicon Solar Cell

Silicon solar cells with heterojunction emitters and laser processed base contacts

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