Locally-confined electrodeposition of Cu(In,Ga)Se&lt;inf&gt;2&lt;/inf&gt; micro islands for micro-concentrator solar cells

Correia, David; Siopa, Daniel; Salomé, Pedro M. P.; Tombolato, Sara; Abderrafi, Kamal; Babbe, Finn; Colombara, Diego; Anacleto, Pedro; Dale, Phillip J.; Sadewasser, Sascha

doi:10.1109/pvsc.2018.8547833

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“…Inset in (c) shows the difference Δ between experimental efficiency and the expected one. Data taken from (α) [36], (β) [28], (γ) [33], (δ) [44], (ε) [40], (η) [26], (θ) [27], (κ) [51], (λ) [57] and (μ) [46].…”

Section: Cigse Micro Solar Cells With Integrated Concentration Opticsmentioning

confidence: 99%

Thin-film micro-concentrator solar cells

et al. 2019

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Photovoltaic (PV) energy conversion of sunlight into electricity is now a well-established technology and a strong further expansion of PV will be seen in the future to answer the increasing demand for clean and renewable energy. Concentrator PV (CPV) employs optical elements to concentrate sunlight onto small solar cells, offering the possibility of replacing expensive solar cells with more economic optical elements, and higher device power conversion efficiencies. While CPV has mainly been explored for highly efficient single-crystalline and multi-junction solar cells, the combination of thinfilm solar cells with the concentration approach opens up new horizons in CPV. Typical fabrication of thin-film solar cells can be modified for efficient, high-throughput and parallel production of organized arrays of micro solar cells. Their combination with microlens arrays promises to deliver micro-concentrator solar modules with a similar form factor to present day flat-panel PV. Such thinfilm micro-concentrator PV modules would use significantly less semiconductor solar cell material (reducing the use of critical raw materials) and lead to a higher energy production (by means of concentrated sunlight), with the potential to lead to a lower levelized cost of electricity. This review article gives an overview of the present state-of-the-art in the fabrication of thin-film micro solar cells based on Cu(In,Ga)Se 2 absorber materials and introduces optical concentration systems that can be combined to build the future thin-film micro-concentrator PV technology.

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