Low-resistivity p-type a-Si:H/AZO hole contact in high-efficiency silicon heterojunction solar cells

Wu, Zhuopeng; Duan, Weiyuan; Lambertz, Andreas; Qiu, Daohong; Pomaska, Manuel; Yao, Zhirong; Rau, Uwe; Zhang, Liping; Liu, Zhengxin; Ding, Kaining

doi:10.1016/j.apsusc.2020.148749

Cited by 30 publications

(29 citation statements)

References 42 publications

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“…More detailed descriptions of the deposition process are reported in other studies. [48,49] Two sizes of solar cells were used in the study. For the first part of the study related to 1 sun performance, the wafers were laser cut into four equal pieces of %78 Â 78 mm 2 .…”

Section: Methodsmentioning

confidence: 99%

How Thin Practical Silicon Heterojunction Solar Cells Could Be? Experimental Study under 1 Sun and under Indoor Illumination

et al. 2021

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The transition toward thinner microcrystalline silicon wafers for their potential performance gain has been of interest in recent years. Theoretical predictions have estimated a maximum efficiency for silicon wafers to be at about 100−110 μm thickness. The potential and losses in silicon heterojunction solar cells prepared on wafers with thickness in the range of 60−170 μm with focus on open‐circuit voltage (V OC) and fill factor (FF) are studied experimentally. The applicability of thinner wafers for low light and indoor applications using light emitting diode (LED) lighting is also studied. The implied V OC (iV OC) is observed to increase with a decrease in wafer thickness according to theoretical predictions with absolute values approaching the theoretical limit. Unlike the iV OC, the implied FF is observed to decrease with wafer thickness reduction opposite to the theoretical predictions which are related to the effect of surface recombination. A combination of gains and losses results in a broad range of high efficiency under 1 sun for wafer thicknesses ranging from 75 to 170 μm with maximum of 22.3% obtained at 75 μm. As for indoor performance, thinner wafers show slightly better efficiency at lower light intensity under sun and LED illumination, promising improved performance for even thinner devices.

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Section: Methodsmentioning

confidence: 99%

How Thin Practical Silicon Heterojunction Solar Cells Could Be? Experimental Study under 1 Sun and under Indoor Illumination

et al. 2021

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“…Promising efficiency results comparable to SHJ solar cells with traditional ITO layers have been reported by several authors, with efficiencies up to B24% reported. [113][114][115][116][117] However, a significant amount of effort still needs to be put into battle with the relatively poor conductivity and long-term stability of AZO layers. [118][119][120] Research on tandem devices must also focus on using indium-free TCO layers such as AZO.…”

Section: Prospects For Reduction In Indium Consumptionmentioning

confidence: 99%

Design considerations for multi-terawatt scale manufacturing of existing and future photovoltaic technologies: challenges and opportunities related to silver, indium and bismuth consumption

Zhang

Kim

Wang

et al. 2021

Energy Environ. Sci.

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“…[54,56,58,141] In this case, the contact resistance is more important due to their major contributions to the total device R series . [142][143][144] In 2016, Lachenal et al analyzed the series resistance (≈0.62 Ω cm 2 ) of a high-efficiency bifacial rear-emitter HJT cell. According to their analysis, p-type a-Si:H /TCO contact is the major contribution of the R series covering ≈38%, followed by the n-type a-Si:H/TCO contact covering ≈22%.…”

Section: Roadmap Toward Higher Ffmentioning

confidence: 99%

“…[ 54,56,58,141 ] In this case, the contact resistance is more important due to their major contributions to the total device R series . [ 142–144 ] In 2016, Lachenal et al. analyzed the series resistance (≈0.62 Ω cm 2 ) of a high‐efficiency bifacial rear‐emitter HJT cell.…”

Section: Roadmap Toward Efficiency Limit Of Shj Solar Cellsmentioning

confidence: 99%

Toward Efficiency Limits of Crystalline Silicon Solar Cells: Recent Progress in High‐Efficiency Silicon Heterojunction Solar Cells

Sun

Chen

et al. 2022

Advanced Energy Materials

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Photovoltaic (PV) technology is ready to become one of the main energy sources of, and contributers to, carbon neutrality by the mid‐21st century. In 2020, a total of 135 GW of PV modules were produced. Crystalline silicon solar cells dominate the world's PV market due to high power conversion efficiency, high stability, and low cost. Silicon heterojunction (SHJ) solar cells are one of the promising technologies for next‐generation crystalline silicon solar cells. Compared to the commercialized homojunction silicon solar cells, SHJ solar cells have higher power conversion efficiency, lower temperature coefficient, and lower manufacturing temperatures. Recently, several new record efficiencies have been achieved. To meet the continued demand for high‐efficiency solar cells, expectations for large‐scale mass production of SHJ solar cells are rising. To approach the efficiency limit and industrialization of SHJ solar cells, serious attempts have been made, yielding higher short‐circuit current, open‐circuit voltage, and fill factor. In this article, these recent advancements are reviewed, which reveals the future roadmap for approaching the efficiency limit.

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Low-resistivity p-type a-Si:H/AZO hole contact in high-efficiency silicon heterojunction solar cells

Cited by 30 publications

References 42 publications

How Thin Practical Silicon Heterojunction Solar Cells Could Be? Experimental Study under 1 Sun and under Indoor Illumination

How Thin Practical Silicon Heterojunction Solar Cells Could Be? Experimental Study under 1 Sun and under Indoor Illumination

Design considerations for multi-terawatt scale manufacturing of existing and future photovoltaic technologies: challenges and opportunities related to silver, indium and bismuth consumption

Toward Efficiency Limits of Crystalline Silicon Solar Cells: Recent Progress in High‐Efficiency Silicon Heterojunction Solar Cells

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