Solar cell efficiency tables (version 39)

Green, Martin A.; Emery, Keith; Hishikawa, Yoshihiro; Warta, Wilhelm; Dunlop, Ewan D.

doi:10.1002/pip.2163

Cited by 1,103 publications

(670 citation statements)

References 26 publications

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“…As a result, the narrow-band gap semiconductor materials, such as Si (1.12 eV) [2], GaAs (1.43 eV) [3,4], CuInS 2 (1.53 eV) [5], and CdTe (1.45 eV) [6][7][8][9], are widely used and studied in solar cells. To date, the maximal efficiencies for Si and GaAs solar cell have reached up to 24.7% [10] and 28.3% [11], respectively, which are almost close to their theoretical limitations. To further improve conversion efficiency, a conceptually straightforward way is to use a stack of cascaded multiple p-n junctions with bandgaps better matching to solar spectrum, such as GaAs-based multi-junction solar cell [12].…”

Section: Introductionsupporting

confidence: 57%

Type-II Core/Shell Nanowire Heterostructures and Their Photovoltaic Applications

Cao

et al. 2012

Nano-Micro Lett.

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Nanowire-based photovoltaic devices have the advantages over planar devices in light absorption and charge transport and collection. Recently, a new strategy relying on type-II band alignment has been proposed to facilitate efficient charge separation in core/shell nanowire solar cells. This paper reviews the type-II heterojunction solar cells based on core/shell nanowire arrays, and specifically focuses on the progress of theoretical design and fabrication of type-II ZnO/ZnSe core/shell nanowire-based solar cells. A strong photoresponse associated with the type-II interfacial transition exhibits a threshold of 1.6 eV, which demonstrates the feasibility and great potential for exploring all-inorganic versions of type-II heterojunction solar cells using wide bandgap semiconductors. Future prospects in this area are also outlooked.

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Section: Introductionsupporting

confidence: 57%

Type-II Core/Shell Nanowire Heterostructures and Their Photovoltaic Applications

Cao

et al. 2012

Nano-Micro Lett.

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“…The power conversion efficiencies (PCEs) of such cells have attained the 8 À 10% mark 1,2 . One of the main bottlenecks in improving efficiencies is ascribed to the trade-off between light absorption and charge extraction, which restricts the active layer thickness.…”

mentioning

confidence: 99%

Uncovering loss mechanisms in silver nanoparticle-blended plasmonic organic solar cells

et al. 2013

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There has been much controversy over the incorporation of organic-ligand-encapsulated plasmonic nanoparticles in the active layer of bulk heterojunction organic solar cells, where both enhancement and detraction in performance have been reported. Here through comprehensive transient optical spectroscopy and electrical characterization, we demonstrate evidence of traps responsible for performance degradation in plasmonic organic solar cells fabricated with oleylamine-capped silver nanoparticles blended in the poly (3-hexylthiophene):[6,6]-phenyl-C 61-butyric acid methyl ester active layer. Despite an initial increase in exciton generation promoted by the presence of silver nanoparticles, transient absorption spectroscopy reveals no increase in the later free polaron population-attributed to fast trapping of polarons by nearby nanoparticles. The increased trap-assisted recombination is also reconfirmed by light intensity-dependent electrical measurements. These new insights into the photophysics and charge dynamics of plasmonic organic solar cells would resolve the existing controversy and provide clear guidelines for device design and fabrication.

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“…With record power conversion efficiencies slightly exceeding 10 % OPV still lag behind other technologies such as Silicon-based photovoltaics that can provide 20 % in modules. 1 However, the benefits of OPV rely on the possibility to produce flexible and low weight products with a high degree of design freedom with very rapid payback times. 2 In addition, it has been claimed that OPV can overperform silicon technology under low light conditions.…”

Section: Introductionmentioning

confidence: 99%

Role of Vertical Segregation in Semitransparent Organic Photovoltaics

Коваленко

Guerrero

García-Belmonte

2015

ACS Appl. Mater. Interfaces

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In this work the efficiency of semitransparent Organic photovoltaic (OPV) devices for low intensity applications is investigated as a function of the processing conditions.It is observed that a thermal treatment of the organic layer induces fullerene migration towards the active layer/air interface. This physical process gives rise to different vertical segregation profile of donor and acceptor molecules. Once the back contact is deposited the amount of fullerene covering the surface will determine the contact selectivity and leakage current of the device. Control of this leakage current may not be essential for devices fabricated for high illumination conditions applications. However, devices to be used under low illumination conditions may be highly influenced by the presence of this parasitic dark current which flows in the opposite direction to photogenerated current. At the proximity of the contacts the vertical segregation profile is inferred from optical and electrical measurements. In particular, External Quantum Efficiency (EQE) measurements carried out from a relatively opaque back contact provide local information on the materials spatially close to the light source.Alternatively, Capacitance-Voltage measurements enable calculation of the percentage of fullerene molecules covering the cathode contact. Overall, a versatile method that can be used in regular and inverted configuration is presented that explain the different behavior observed for devices to be used under low illumination conditions. Keywords: Organic photovoltaics, low illumination conditions, contact selectivity, Capacitance-Voltage, impedance spectroscopy. 2 I ntroductionOrganic Photovoltaics (OPV) have been studied for nearly 30 years and the technology is now on the verge of commercialization. With record power conversion efficiencies slightly exceeding 10 % OPV still lag behind other technologies such as Silicon-based photovoltaics that can provide 20 % in modules. 1 However, the benefits of OPV rely on the possibility to produce flexible and low weight products with a high degree of design freedom with very rapid payback times. 2 In addition, it has been claimed that OPV can overperform silicon technology under low light conditions. 3These advantages and the ease of handling in subsequent product-integration processes will enable its implementation into new consumer and portable electronics such as building-integrated photovoltaic (BIPV) products.valueadded applications may be envisaged such as the use of semitransparent windows BIPV that permit both natural or color designed room illumination with production of solar electricity. Such a semitransparent device could additionally function during the night as a room light scavenger working under low illumination conditions to recover part of the wasted illumination energy. A range of different techniques have been developed to study segregation of donor and acceptor molecules within the active layer. 15 Amongst the different types some provide 3D structural information of the...

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Solar cell efficiency tables (version 39)

Abstract: Consolidated tables showing an extensive listing of the highest independently confirmed efficiencies for solar cells and modules are presented. Guidelines for inclusion of results into these tables are outlined, and new entries since July 2011 are reviewed

Cited by 1,103 publications

References 26 publications

Type-II Core/Shell Nanowire Heterostructures and Their Photovoltaic Applications

Type-II Core/Shell Nanowire Heterostructures and Their Photovoltaic Applications

Uncovering loss mechanisms in silver nanoparticle-blended plasmonic organic solar cells

Role of Vertical Segregation in Semitransparent Organic Photovoltaics

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