2018
DOI: 10.1039/c7ee02627g
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Mechanically-stacked perovskite/CIGS tandem solar cells with efficiency of 23.9% and reduced oxygen sensitivity

Abstract: A perovskite/CIGS tandem configuration is an attractive and viable approach to achieve an ultra-high efficiency and cost-effective all-thin-film solar cell.

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Cited by 228 publications
(219 citation statements)
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“…Although the use of such customized liquids as intermediate medium can boost the transmittance of the perovskite top solar cell, practical integration of such liquid layers is complicated because of mechanical instabilities. A more robust solution to enhance the NIR transmittance of the perovskite solar cell while keeping air as the intermediate medium is by adding a layer of MgF 2 on the rear side of the perovskite top solar cell (Figure C) . Our ray‐tracing simulations predict that introducing a layer of MgF 2 at the rear ITO‐air interface has similar effect on the short‐circuit current density (J SC ) of the silicon bottom solar cell as changing the refractive index of the intermediate medium (Figure ).…”
Section: Resultsmentioning
confidence: 91%
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“…Although the use of such customized liquids as intermediate medium can boost the transmittance of the perovskite top solar cell, practical integration of such liquid layers is complicated because of mechanical instabilities. A more robust solution to enhance the NIR transmittance of the perovskite solar cell while keeping air as the intermediate medium is by adding a layer of MgF 2 on the rear side of the perovskite top solar cell (Figure C) . Our ray‐tracing simulations predict that introducing a layer of MgF 2 at the rear ITO‐air interface has similar effect on the short‐circuit current density (J SC ) of the silicon bottom solar cell as changing the refractive index of the intermediate medium (Figure ).…”
Section: Resultsmentioning
confidence: 91%
“…Perovskite photovoltaic (PV) technology has demonstrated remarkable advancement in recent years reaching power conversion efficiencies (PCEs) comparable with established PV technologies such as single‐junction crystalline silicon (c‐Si) and copper indium gallium diselenide (CIGS) . Moreover, remarkable electronic properties coupled with simple, inexpensive fabrication make perovskite solar cells ideal candidates for low‐cost, high‐efficient multijunction photovoltaics . Multijunction solar cells such as perovskite‐Si and perovskite‐CIGS hold the exciting potential to surpass the theoretical efficiency limits of commercial single‐junction solar cells …”
Section: Introductionmentioning
confidence: 99%
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“…The perovskite–perovskite tandems have achieved a four‐terminal efficiency of 23.1% by utilizing FA 0.8 Cs 0.2 Pb(I 0.7 Br 0.3 ) 3 ( E g = 1.75 eV) and (FASnI 3 ) 0.6 (MAPbI 3 ) 0.4 ( E g = 1.25 eV), with a monolithic tandem efficiency of 21.0% . The four‐terminal perovskite–CIGS tandem devices have accomplished an efficiency of 23.9% based on a semi‐transparent Cs 0.05 Rb 0.05 FA 0.765 MA 0.135 PbI 2.55 Br 0.45 perovskite top‐cell with a bandgap of 1.62 eV, whereas the monolithic tandems have demonstrated 22.43% efficiency by utilizing Cs 0.09 FA 0.77 MA 0.14 Pb(I 0.86 Br 0.14 ) 3 ( E g = 1.59 eV). Based on simulations, it is possible to boost the theoretical efficiency to 43% for perovskite–silicon tandem with a perovskite top subcell ( E g = 1.65 eV) and 39% for perovskite–perovskite tandem with an optimal bandgap combination of 1.14/1.75 eV.…”
Section: Introductionmentioning
confidence: 99%
“…[1] To go beyond Shockley-Queisser radiative efficiency limit for single-junction solar cells, wide-bandgap (WBG) perovskite top solar cells (E G > 1.6 eV) [5] are combined with high-efficiency low-bandgap (LBG) bottom solar cells made from Si, [6] CIGS [7] or LBG (E G < 1.3 eV) perovskite devices. [1] To go beyond Shockley-Queisser radiative efficiency limit for single-junction solar cells, wide-bandgap (WBG) perovskite top solar cells (E G > 1.6 eV) [5] are combined with high-efficiency low-bandgap (LBG) bottom solar cells made from Si, [6] CIGS [7] or LBG (E G < 1.3 eV) perovskite devices.…”
mentioning
confidence: 99%