Mechanically-stacked perovskite/CIGS tandem solar cells with efficiency of 23.9% and reduced oxygen sensitivity

Shen, Heping; Peng, Jun; Jacobs, Daniel A.; Wu, Nandi; Gong, Junbo; Wu, Yiliang; Karuturi, Siva Krishna; Fu, Xiao; Weber, Klaus; Xiao, Xudong; White, Thomas P.; Catchpole, Kylie

doi:10.1039/c7ee02627g

Cited by 221 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%

“…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%

“…In recent years, significant advances in lab‐scale multijunction PCE have been reported, abundantly for perovskite‐Si and modestly for perovskite‐CIGS multijunction solar cells . The prospect of scalable high‐efficient perovskite‐Si and perovskite‐CIGS multijunction solar modules holds substantial potential for a disruptive change in the PV market .…”

Section: Introductionmentioning

confidence: 99%

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Toward scalable perovskite‐based multijunction solar modules

Jaysankar

Paetel

Ahlswede

et al. 2019

Progress in Photovoltaics

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Perovskite‐based multijunction solar cells can potentially overcome the power conversion efficiency (PCE) limits of established solar cell technologies. The technology combines high‐efficiency perovskite top solar cells with crystalline silicon (c‐Si) and copper indium gallium diselenide (CIGS) single‐junction solar cells enabling a more efficient harnessing of solar energy. In this work, we present high‐efficiency and scalable perovskite‐CIGS and perovskite‐Si multijunction solar modules in a four‐terminal configuration. We design the multijunction solar modules for minimal optical losses through careful optical engineering. In addition to optimized light coupling, the solar modules are fabricated in a scalable device design. Starting from lab‐scale cells of 0.13 cm2, we scale up the multijunction devices by two orders of magnitude to 16 cm2 and investigate the various losses affecting the PCE of large‐area multijunction solar modules, thus providing valuable insights into scalability of the technology. The champion perovskite‐CIGS and perovskite‐Si multijunction solar modules exhibit higher PCE than the stand‐alone devices on sizes up 16 cm2, paving the way for high‐effiency perovskite‐based multijunction photovoltaics. This work brings to forth relevant upscaling aspects of perovskite‐based multijunction solar cell technology, which is a key milestone in the road to commercial feasibility of the perovskite‐based multijunction solar cell technology.

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Section: Resultsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Toward scalable perovskite‐based multijunction solar modules

Jaysankar

Paetel

Ahlswede

et al. 2019

Progress in Photovoltaics

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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%

Two‐Terminal Perovskites Tandem Solar Cells: Recent Advances and Perspectives

Song

Chen

et al. 2019

Solar RRL

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Metal halide perovskite‐based solar cells have achieved rapidly increasing efficiencies of up to 23.7%. However, it is still far away from the Shockley–Quiesser limit of 33.16%. Tandem solar cells, consisting of two subcells with complementary absorption, are suggested as an alternative to beat this limit due to the fact that a maximum efficiency of 42% can be reached using two subcells with bandgaps of 1.9 eV/1.0 eV, opening up a great potential to develop perovskite‐based tandem solar cells. In this review, the current status of and recent advances in perovskite‐based tandem solar cells are highlighted, including perovskite–silicon, perovskite–perovskite, and perovskite–copper indium gallium selenide (CIGS) integrations. Different configurations, key issues regarding the photoelectric properties, present efficiency limitations, and material design are discussed. The critical role of perovskite bandgap optimization, interface engineering, and recombination layers are also analyzed to outline the roadmaps for future investigation. The current challenging issues and future perspectives are also provided. It is hoped that the findings will provide new perspectives for perovskite‐based tandem solar cells with an unprecedented performance and the opportunity for commercialization.

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“…[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%

Vacuum‐Assisted Growth of Low‐Bandgap Thin Films (FA_0.8MA_0.2Sn_0.5Pb_0.5I₃) for All‐Perovskite Tandem Solar Cells

Nejand

Hossain

Jakoby

et al. 2019

Advanced Energy Materials

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enormous interest in perovskite-based multi-junction photovoltaics (PV). [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. [8][9][10] While tandem PV technologies based on market-dominant crystalline Si and CIGS bottom solar cells have recently demonstrated PCEs exceeding 28%, [6,11] all-perovskite tandem solar cells are still less advanced. In comparison to single junction PSCs, all-perovskite tandem solar cells still lack behind with record PCEs of 23.1% [12] and 25% [12] for of all-perovskite two-terminal (2T) and four-terminal (4T) tandem solar cells, respectively.The key challenges hindering the progress of all-perovskite tandem solar cells are the low performance and stability of the LBG perovskite bottom solar cells. To resolve these challenges, previous studies on LBG perovskite thin films addressed compositional engineering of the perovskite, strategies to improve the thin-film morphology, and routes to enhance the optical and electrical properties. [8,10,[12][13][14][15] LBG All-perovskite multijunction photovoltaics, combining a wide-bandgap (WBG) perovskite top solar cell (E G ≈1.6-1.8 eV) with a low-bandgap (LBG) perovskite bottom solar cell (E G < 1.3 eV), promise power conversion efficiencies (PCEs) >33%. While the research on WBG perovskite solar cells has advanced rapidly over the past decade, LBG perovskite solar cells lack PCE as well as stability. In this work, vacuum-assisted growth control (VAGC) of solution-processed LBG perovskite thin films based on mixed Sn-Pb perovskite compositions is reported. The reported perovskite thin films processed by VAGC exhibit large columnar crystals. Compared to the well-established processing of LBG perovskites via antisolvent deposition, the VAGC approach results in a significantly enhanced charge-carrier lifetime. The improved optoelectronic characteristics enable high-performance LBG perovskite solar cells (1.27 eV) with PCEs up to 18.2% as well as very efficient four-terminal all-perovskite tandem solar cells with PCEs up to 23%. Moreover, VAGC leads to promising reproducibility and potential in the fabrication of larger active-area solar cells up to 1 cm 2 .In recent years, hybrid organic-inorganic perovskite materials attracted tremendous attention due to their outstanding optoelectronic and piezoelectric properties. [1][2][3] The optoelectronic properties of the perovskite materials enables power conversion efficiencies (PCEs) as high as 25.2% in singlejunction perovskite thin-film solar cells. [4] Moreover, the wide range of bandgaps (E G ) of this class of materials generates Adv. Energy perovskite thin films are realized by careful compositional engineering, incorporating Sn at the site of Pb in multication perovskite crystal structures. [8,10,13] In this regard, the exact ratio of Sn to Pb is criti...

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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.

Cited by 221 publications

References 48 publications

Toward scalable perovskite‐based multijunction solar modules

Toward scalable perovskite‐based multijunction solar modules

Two‐Terminal Perovskites Tandem Solar Cells: Recent Advances and Perspectives

Vacuum‐Assisted Growth of Low‐Bandgap Thin Films (FA_0.8MA_0.2Sn_0.5Pb_0.5I₃) for All‐Perovskite Tandem Solar Cells

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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.

Cited by 221 publications

References 48 publications

Toward scalable perovskite‐based multijunction solar modules

Toward scalable perovskite‐based multijunction solar modules

Two‐Terminal Perovskites Tandem Solar Cells: Recent Advances and Perspectives

Vacuum‐Assisted Growth of Low‐Bandgap Thin Films (FA0.8MA0.2Sn0.5Pb0.5I3) for All‐Perovskite Tandem Solar Cells

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Product

Resources

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Vacuum‐Assisted Growth of Low‐Bandgap Thin Films (FA_0.8MA_0.2Sn_0.5Pb_0.5I₃) for All‐Perovskite Tandem Solar Cells