12.0% Efficiency on large area, encapsulated, multijunction nc-Si:H based solar cells

Banerjee, Arindam; Liu, Frank; Beglau, D.; Su, T.; Pietka, G.; Yan, Baojie; Yue, Guozhen; Yang, Jianji; Guha, S.

doi:10.1109/pvsc.2011.6185924

Cited by 5 publications

(5 citation statements)

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“…As the multi-junction stacking technique has been proved effective for other types of solar cells, 35 a similar approach has also been adopted for the inorganic perovskite cells to harvest a wider portion of the solar spectrum. For a series-connected multijunction cell, the current of each subcell must match those of the other subcells to achieve maximized J SC for the device.…”

Section: Context and Scalementioning

confidence: 99%

Graded Bandgap CsPbI2+Br1− Perovskite Solar Cells with a Stabilized Efficiency of 14.4%

Bian

Bai

Jin

et al. 2018

Joule

327

248

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Here, a high-performance graded bandgap structure-based solar cell was designed and demonstrated, comprising a CsPbI 2 Br bottom cell and a CsPbI 3 QD top cell. Several optimizations were conducted to boost the device performance. As a result, the extended photoresponse, high carrier mobility, and well-matched energy levels afford a record power conversion efficiency of 14.45%, coupled with a high J SC of 15.25 mA/cm 2 . The result shows that optical and energy-band manipulation is an effective approach for improving the performance of inorganic perovskite solar cells.

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Section: Context and Scalementioning

confidence: 99%

Graded Bandgap CsPbI2+Br1− Perovskite Solar Cells with a Stabilized Efficiency of 14.4%

Bian

Bai

Jin

et al. 2018

Joule

327

248

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“…The device efficiency can be further enhanced by stacking different band gap layers together for harvesting broader range of sunlight spectrum. Banerjee , et al [9] developed triple junction solar cells based on a‐Si:H/nc‐Si:H/nc‐Si:H configuration with the stable efficiency of 12.41% on a 1.05 cm 2 solar cell and 11.2% on a 400 cm 2 encapsulated cell [10]. Thin‐film solar cell considerably utilises less amount of materials when compared with bulk crystalline counterparts, yet there is ample room available for optimising the PV performance by careful selection of the materials and parameters during the designing process.…”

Section: Introductionmentioning

confidence: 99%

Modelling and performance analysis of amorphous silicon solar cell using wide band gap nc‐Si:H window layer

Mehmood

Tauqeer

2017

IET Circuits, Devices & Syst

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Poor charge transport mechanism and light-induced degradation effects are among the key factors leading to the degraded performance of single-junction amorphous silicon (a-Si:H) solar cells. Existent photovoltaic configurations, based on amorphous silicon carbide (a-SiC:H) window layer, have established efficiencies in the range of 7-10%. Limited performance of such devices has been addressed by replacing a-SiC:H with a wide band gap (∼2 eV) hydrogenated nano-crystalline silicon (nc-Si:H) layer that reportedly exhibits crystalline properties at small scale. Here, the proposed solar cell based on p-nc-Si:H/i-a-Si:H (buffer)/i-a-Si:H/n-a-Si:H configuration has been simulated with SILVACO TCAD by analysing window and intrinsic absorber layers thickness, as well as doping concentrations. Along with the engineering of p/i interface, in-depth evaluation of absorber defects parameters has also been undertaken in order to reduce the recombination rate. The simulated results of an optimised single-junction device demonstrated an open-circuit voltage (VOC) of 0.865 V, short-circuit current density (JSC) of 21.7 mA/ cm 2 , Fill factor (FF) of 0.69 and power conversion efficiency of 12.93%, which is promising when compared with the solar cell already reported. The proposed structure will provide the platform for further development of low cost and efficient multijunction thin-film amorphous solar cell technology.

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“…78 In fact, the former United Solar Ovonic LLC used to fabricate triplejunction thin-film silicon cells using roll-to-roll PECVD technology, with each run producing 15 km long solar cells. 79,80 In a broad context, a CVD process refers to the formation of a thin solid film on a substrate via a chemical reaction of vaporphase precursors, and therefore, it differs from PVD. CVD has been widely employed in the PV sector and industrial settings, e.g., Mitsubishi Heavy Industries, Ltd. demonstrated an operating megawatt capacity solar farm based on singlejunction hydrogenated amorphous Si (a-Si:H) solar modules grown by plasma-enhanced CVD installed in Germany.…”

Section: Ava)mentioning

confidence: 99%

“…Chemical vapor deposition (CVD) is another mature vapor-based method that has been playing a pivotal role in the Si-based PV industry . In fact, the former United Solar Ovonic LLC used to fabricate triple-junction thin-film silicon cells using roll-to-roll PECVD technology, with each run producing 15 km long solar cells. , …”

mentioning

confidence: 99%

“…In the context of PSC research, CVD has many particular advantages: (i) CVD is a mature and well-established technology in the semiconductor and coating industries. CVD not only is compatible with industrial application for large-scale commercial processes but also has the ability to be used in a batch process and high throughput continuous processes, as proven by manufacturers in their kilometer-long roll-to-roll deposition. , Additional advantages of vacuum processes are easy adaptation for patterning, compatible with a wide range of materials, reasonable capital investment, and cost-effectiveness. (ii) Vapor deposition eliminates the use of harmful organic solvents ,− and reduces the waste of perovskite precursor solutions.…”

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confidence: 99%

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Scalable Fabrication of Metal Halide Perovskite Solar Cells and Modules

et al. 2019

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Perovskite photovoltaic (PV) technology toward commercialization relies on high power conversion efficiency (PCE), long lifetime, and low-toxicity in addition to development of scalable fabrication protocols, optimization of large-area solar module structures, and a positive cost–benefit assessment. Although small-area metal halide perovskite solar cells (PSCs) show PCE up to 24.2%, the efficiency gap between small- and large-area PSC devices is still large. Worldwide research efforts have been directed toward developing scalable fabrication strategies for perovskite solar modules. In this Review, we share our view regarding the current-stage challenges for the fabrication of perovskite solar modules with areas greater than 200 cm2, summarize recent progress in minimizing the efficiency gap, and highlight what strategies warrant further investigation for moving perovskite PV technology toward industrial scale. These strategies include learning from other commercialized thin-film PV technologies, analyzing the current status of perovskite solar modules employing solution- and vapor-based scalable fabrication techniques, and optimizing large-area module designs. Considering cost analysis and operational stability profiles, carbon electrode-based devices are particularly promising.

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12.0% Efficiency on large area, encapsulated, multijunction nc-Si:H based solar cells

Cited by 5 publications

References 0 publications

Graded Bandgap CsPbI2+Br1− Perovskite Solar Cells with a Stabilized Efficiency of 14.4%

Graded Bandgap CsPbI2+Br1− Perovskite Solar Cells with a Stabilized Efficiency of 14.4%

Modelling and performance analysis of amorphous silicon solar cell using wide band gap nc‐Si:H window layer

Scalable Fabrication of Metal Halide Perovskite Solar Cells and Modules

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