Improved optical and electrical properties for heterojunction solar cell using Al2O3/ITO double-layer anti-reflective coating

Zahid, Muhammad Aleem; Khokhar, Muhammad Quddamah; Cui, Zhaolei; Park, Hyeongsik; Yi, Junsin

doi:10.1016/j.rinp.2021.104640

Cited by 16 publications

(11 citation statements)

References 41 publications

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“…Finally, the LIV characteristics of each cell were measured, and its electrical properties and performance parameters were extracted. 46,47 Figure 8 shows the variation of current and power densities with respect to the voltage of the best among the three cells each having curing temperature for electrode formation was the same. Evidently, the highest values of performance parameters of all cells were achieved for the cells fabricated at curing temperature of 180 °C.…”

Section: Resultsmentioning

confidence: 99%

Optimization of the Electrode Formation Mechanism for Crystalline Silicon Heterojunction Solar Cells

Oh¹,

Yousuf²,

Dhungel³

et al. 2022

ECS J. Solid State Sci. Technol.

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The screen-printing process for making good contact of electrodes with the top layer of solar cells is crucial for enhancing the electrical properties of a solar cell. This paper reports the experimental approach adopted for the process of electrode formation and the resulting shape of electrodes in silicon-based heterojunction (SHJ) solar cells. It was observed that good contact between electrodes and the top transparent conductive oxide (TCO) layer strongly depends on the squeegee pressure, curing temperature, and curing time. By optimizing the squeegee pressure at 0.350 MPa, snap-off distance of 1.4 mm, squeegee speed of 80 mm/sec, curing temperature of 180°C, and curing time of 30 minutes, the height to width ratio (aspect ratio) of the fabricated electrodes was achieved at ~0.66. The results have been verified through 3D laser profiler, field emission scanning electron microscopy, transfer length method, and light current-voltage measurements. The SHJ solar cells were fabricated using an optimized condition and successfully achieved splendid properties of short circuit current density (Jsc), open circuit voltage (Voc), fill factor (FF), and efficiency (η) up to 40.57 mA/cm2, 723 mV, 81.03%, and 23.79%, respectively.

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Section: Resultsmentioning

confidence: 99%

Optimization of the Electrode Formation Mechanism for Crystalline Silicon Heterojunction Solar Cells

Oh¹,

Yousuf²,

Dhungel³

et al. 2022

ECS J. Solid State Sci. Technol.

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“…Lately, multilayer ARCs, as a simple and convenient strategy to optimize the optical performance of SHJ SCs, 11,12) have been intensely studied. For SHJ SCs, SiO 2 , [12][13][14] MgF 2 , 4,15) Al 2 O 3 , 16,17) and CaF 2 18) are commonly used as ARCs on the surface of ITO. However, Al 2 O 3 is deposited using atomic layer deposition which costs much money and time.…”

Section: Introductionmentioning

confidence: 99%

Comparing single-, double- and triple-layer anti-reflection coatings for ultra-low reflectance in silicon heterojunction solar cells

Hao

Song

Jiang

et al. 2023

Jpn. J. Appl. Phys.

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To increase the efficiency of silicon heterojunction (SHJ) solar cells (SCs), it is paramount to enhance the utilization of sunlight by light management. In this study, the dependences of weighted reflectance and thus generation current (JG) for SHJ SCs on different anti-reflective structures are displayed by OPAL2 simulation tool. According to this, SiNx and SiO2 films are deposited on front of Indium tin oxide (ITO) as multilayer anti-reflection coatings (ARC). It is demonstrated experimentally that the photovoltaic performance of SHJ solar cells can be significantly improved by multilayer anti-reflection coatings Especially, with 90/21/40 nm SiO2/SiNx/ITO anti-reflective layer structure, the reflectance of SHJ solar cell is reduced as low as 0.94%, and JG is shown to be increased by 4.34% compared to the common solar cells. This work shows a promising and cost-effective way to achieve higher light utilization and thus promotes photovoltaic characteristics for SHJ solar cells.

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“…[ 20 ] The addition of thin dielectric layer of the TCO film is favorable to lower the cost and improves the cell's and module's stability and efficiency. [ 21 ] Moreover, optical coatings of oxide and fluoride films have been extensively studied because of their larger bandgap. The application of DLARC in SHJ solar cells has been mentioned in a few articles.…”

Section: Introductionmentioning

confidence: 99%

“…Zhang [ 24 ] showed the optical analysis of SiO x /ITO DLARC through deposition from electron beam evaporation for SHJ solar cell with enhancing short circuit current density ( J sc ) and efficiency ( η ); however, a detailed process was not provided. There is an advantage of Al 2 O 3 /ITO double layer with respect to efficiency of the device [ 21 ] but the deposition of Al 2 O 3 is a very slow process. Al 2 O 3 is deposited using atomic layer deposition which takes ≈6 h to deposit 50 nm layer.…”

Section: Introductionmentioning

confidence: 99%

Utilization of CaF₂/ITO Double‐Layer Anti‐Reflective Coating for Increasing the Efficiency in Rear Emitter SHJ Solar Cells

Zahid

Khokhar

Kim

et al. 2022

Crystal Research and Technology

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A method to minimize optical losses in the front side of rear emitter silicon heterojunction (SHJ) solar cells by applying double-layer antireflection coating (DLARC) has been examined. The primary aim is to increase the short circuit current density (J sc ) using DLARC that is associated with the cell's absorbance. The optical and electrical properties of single-layer antireflection coating (SLARC) are studied and compared with calcium fluoride (CaF 2 )/Indium tin oxide (ITO) DLARC.OPAL 2 is utilized as a simulation tool to increase the optical properties of CaF 2 /ITO DLARC, and the experimental result verifies its validity. ITO is deposited using sputter system while thermal evaporator is utilized to deposit CaF 2 to make DLARC. The SHJ solar cell having DLARC demonstrates the average reflection of 6.55% which is 31.7% less than SLARC, that is 9.59% for the wavelength range of 300 to 1100 nm. The fabricated textured solar cell with CaF 2 /ITO DLARC shows enhancement in external quantum efficiency from 76.89% to 81.06%. It also indicates an improvement in J sc to 40.83 mA cm -2 from 39.91 mA cm -2 and having a conversion efficiency of >21% when compared with that of ITO SLARC.

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Improved optical and electrical properties for heterojunction solar cell using Al2O3/ITO double-layer anti-reflective coating

Cited by 16 publications

References 41 publications

Optimization of the Electrode Formation Mechanism for Crystalline Silicon Heterojunction Solar Cells

Optimization of the Electrode Formation Mechanism for Crystalline Silicon Heterojunction Solar Cells

Comparing single-, double- and triple-layer anti-reflection coatings for ultra-low reflectance in silicon heterojunction solar cells

Utilization of CaF₂/ITO Double‐Layer Anti‐Reflective Coating for Increasing the Efficiency in Rear Emitter SHJ Solar Cells

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Improved optical and electrical properties for heterojunction solar cell using Al2O3/ITO double-layer anti-reflective coating

Cited by 16 publications

References 41 publications

Optimization of the Electrode Formation Mechanism for Crystalline Silicon Heterojunction Solar Cells

Optimization of the Electrode Formation Mechanism for Crystalline Silicon Heterojunction Solar Cells

Comparing single-, double- and triple-layer anti-reflection coatings for ultra-low reflectance in silicon heterojunction solar cells

Utilization of CaF2/ITO Double‐Layer Anti‐Reflective Coating for Increasing the Efficiency in Rear Emitter SHJ Solar Cells

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Utilization of CaF₂/ITO Double‐Layer Anti‐Reflective Coating for Increasing the Efficiency in Rear Emitter SHJ Solar Cells