Thin concentrator photovoltaic module with micro-solar cells which are mounted by self-align method using surface tension of melted solder

Hayashi, Nobuhiko; Terauchi, M.; Aya, Yoichiro; Kanayama, Shutetsu; Nishitani, Hiromu; Nakagawa, Tohru; Takase, M.

doi:10.1063/1.5001443

Cited by 15 publications

(17 citation statements)

References 6 publications

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“…The in‐plane positioning error between the POE and the SOE‐integrated frame is less than 10 μ m. A more detailed description of the assembly processes can be found in previous studies 10,11 . Chromatic aberration causes the beam size incident on the subcells in a multijunction cell to be different and was considered when choosing the glass substrate thickness and the distance between the POE and the SOE.…”

Section: The Pic Modulementioning

confidence: 99%

“…A more detailed description of the assembly processes can be found in previous studies. 10,11 Chromatic aberration causes the beam size incident on the subcells in a multijunction cell to be different and was considered when choosing the glass substrate thickness and the distance between the POE and the SOE. This is achieved by comparing the performances of modules indoor and outdoor with different design parameters.…”

Section: Fabrication Of Pic Modulesmentioning

confidence: 99%

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Demonstration and error analysis of scaling‐up plastic‐integrated concentrator photovoltaic panels to 1 m²

Lee

Hayashi

Takase

2020

Progress in Photovoltaics

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Plastic lens integrated III‐V compound semiconductor cell (PIC) modules or other microconcentrator/miniconcentrator photovoltaic (CPV) modules reduce the volume and weight of CPV modules to a size comparable to flat panel photovoltaics. However, the areal density of solar cells and lenses in a PIC or other micro‐mini‐CPV modules significantly increases by at least an order of magnitude, which raises the required precision and consistency of the module assembling, because a slightly misaligned solar cell can limit the current of the whole circuit and inhibit the performance of the full module. In this study, we presented the results of a 1 m2 module consisting of 2025 solar cells with a direct‐normal‐irradiance efficiency of more than 30%. To the best of our knowledge, this is the largest area for a CPV module with a height of less than 5 cm reported so far. To quantify the different causes of misalignment, we proposed a probabilistic analysis to model how these errors affect the performance of the CPV module. The results show that the dominant error of the PIC module is attributed to around 0.5° misaligned orientation between the unit modules. This analysis approach can also be applied to other types of micro‐CPV modules.

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Section: The Pic Modulementioning

confidence: 99%

Section: Fabrication Of Pic Modulesmentioning

confidence: 99%

Demonstration and error analysis of scaling‐up plastic‐integrated concentrator photovoltaic panels to 1 m²

Lee

Hayashi

Takase

2020

Progress in Photovoltaics

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“…Micro-CPV is the miniaturization of the solar cell to an area of less than 1 mm 2 . Several module designs with small solar cells have been demonstrated 60,214,217 reaching efficiencies of 35%. 218,219 Panasonic 217,219 uses PMMA lenses either directly attached to the solar cell (edge length of 970 lm) or with secondary optics and solar cell area of 0.672 mm 2 .…”

Section: Micro-cpvmentioning

confidence: 99%

“…224,225 In the process from Panasonic, the surface tension during the soldering process is applied. 217 For parallel manufacturing of the front contacts (screen), printing, plating, or ink jet processes are feasible. Furthermore, solar cell structures with back contacted solar cells do not require a separate front contact and electrical interconnection can be realized with circuit boards.…”

Section: Micro-cpvmentioning

confidence: 99%

Challenges in the design of concentrator photovoltaic (CPV) modules to achieve highest efficiencies

Wiesenfarth

Antón

Bett

2018

Applied Physics Reviews

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Concentrator photovoltaics (CPV) is a special high efficiency system technology in the world of PV-technologies. The idea of CPV is to use optical light concentrators to increase the incident power on solar cells. The solar cell area is comparatively tiny, thus saving expensive semiconductor materials and allowing the use of more sophisticated and more costly multi-junction solar cells. The highest CPV module efficiency achieved is 38.9%. This CPV module uses four-junction III-Vbased solar cells. Moreover, mini-modules have already achieved an efficiency of 43.4%. The interaction between optics, cells, and layout of the module and tracker determines the overall field performance. Today, some utility scale CPV plants are installed. The CPV technology allows for many technical solutions for system designs and for optimizing performance while maintaining the economics. This paper will review the achievements and discuss the challenges for the CPV module technology and its components. We discuss the different components and the most important effects regarding the module design. Furthermore, we present the module designs that have shown the highest efficiencies.

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“…Micro‐CPV approach requires automated high‐speed assembly techniques, such as the ones used for consumer electronics, to maintain the cost competitiveness. Both micrometre‐scale high‐efficiency solar cells and cells with both contacts on the rear surface or on the front surface are required and were investigated 2–4 …”

Section: Introductionmentioning

confidence: 99%

Three‐junction monolithic interconnected modules for concentrator photovoltaics

Albert

Jaouad

Hamon

et al. 2021

Progress in Photovoltaics

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A core issue in concentrator photovoltaic technology (CPV) is the resistive losses in cells that usually limits the maximum photoconversion efficiency under high concentration. We propose the use of three‐junction monolithic interconnected modules (MIM) to mitigate resistive losses by providing high‐voltage low‐current power. First, we present the fabrication of InGaP/InGaAs/Ge front‐contacted microcells with various designs and dimensions. Front‐contacted cells are the key enabler for the MIM fabrication and demonstrate good electrical characteristics under one sun, similar to standard‐contacted cells. The base front contact size is minimized to limit the unutilized area on the wafer. Second, fabrication techniques for interconnecting cells in MIM are described. Finally, electrical measurements show a record conversion efficiency of 35.1% under 798 suns for the first three‐junction MIM reported (17.8% when considering the entire device area). Versatility and further optimization of the devices are discussed to enlarge their field of application.

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Thin concentrator photovoltaic module with micro-solar cells which are mounted by self-align method using surface tension of melted solder

Cited by 15 publications

References 6 publications

Demonstration and error analysis of scaling‐up plastic‐integrated concentrator photovoltaic panels to 1 m²

Demonstration and error analysis of scaling‐up plastic‐integrated concentrator photovoltaic panels to 1 m²

Challenges in the design of concentrator photovoltaic (CPV) modules to achieve highest efficiencies

Three‐junction monolithic interconnected modules for concentrator photovoltaics

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Thin concentrator photovoltaic module with micro-solar cells which are mounted by self-align method using surface tension of melted solder

Cited by 15 publications

References 6 publications

Demonstration and error analysis of scaling‐up plastic‐integrated concentrator photovoltaic panels to 1 m2

Demonstration and error analysis of scaling‐up plastic‐integrated concentrator photovoltaic panels to 1 m2

Challenges in the design of concentrator photovoltaic (CPV) modules to achieve highest efficiencies

Three‐junction monolithic interconnected modules for concentrator photovoltaics

Contact Info

Product

Resources

About

Demonstration and error analysis of scaling‐up plastic‐integrated concentrator photovoltaic panels to 1 m²

Demonstration and error analysis of scaling‐up plastic‐integrated concentrator photovoltaic panels to 1 m²