Photon upconversion utilizing energy beyond the band gap of crystalline silicon with a hybrid TES-ADT/PbS quantum dots system

Nishimura, Naoyuki; Allardice, Jesse R.; Xiao, James; Gu, Qifei; Gray, Victor; Rao, Akshay

doi:10.1039/c9sc00821g

Cited by 52 publications

(82 citation statements)

References 44 publications

(69 reference statements)

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“…Much less or no energy loss in the ISC process was attained for semiconductor nanocrystals and osmium (Os) complexes with singlet-to-triplet (SÀ T) absorption. [23][24][25][26][27][28][29][30][31] Meanwhile, solid-state upconverters are desirable for device applications. The groups of Bulović, Bawendi, and Baldo achieved the NIR-to-vis TTA-UC in the solid-state.…”

Section: Introductionmentioning

confidence: 99%

Photon Upconverting Solid Films with Improved Efficiency for Endowing Perovskite Solar Cells with Near‐Infrared Sensitivity

et al. 2020

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Perovskite solar cells have emerged as the next-generation high-efficiency solar cell, but their absorption is mostly limited to the visible (vis) range. One possible solution is to integrate near-infrared (NIR)-to-vis photon upconversion (UC). Herein, we show the first example of endowing perovskite solar cells with NIR sensitivity by using solid films showing NIR-to-vis UC based on triplet-triplet annihilation (TTA). A high TTA-UC efficiency of 4.1 � 0.3 % at an excitation intensity of 125 W/cm 2 is achieved by sensitizing a rubrene (acceptor) triplet with an osmium (Os) complex donor having singlet-to-triplet (SÀ T) absorption in the NIR range, and by increasing the fluorescence quantum yield through energy harvesting to a highly fluorescent collector. In particular, our spectroscopic studies indicate that the upconverted acceptor singlet energy is almost selectively transferred to the collector rather than being quenched by the donor. By attaching the TTA-UC film behind a semi-transparent perovskite solar cell, a photocurrent generation is observed under excitation at 938 nm.

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Section: Introductionmentioning

confidence: 99%

Photon Upconverting Solid Films with Improved Efficiency for Endowing Perovskite Solar Cells with Near‐Infrared Sensitivity

et al. 2020

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“…In addition, for these applications it is crucial to utilizing near-infrared (NIR) photons to drive the upconversion, as the window for high transparency of biological tissue lies in the NIR region (700 -900 nm). 1,[5][6][7][8] While there are many systems with PUC working in the NIR to red, 5,[9][10][11][12][13] or green to blue regions, [13][14][15][16][17] there are few systems capable to functioning to convert NIR to blue photons. [6][7][8] As the difference in energy between blue and NIR photons is large (e.g., 470 nm: 2.64 eV and 800 nm: 1.55 eV), a reduction of energy loss in PUC process, leading to larger anti-Stokes shift (: (PUC emission energy) -(excitation energy)), is also important.…”

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confidence: 99%

Photon Upconversion from Near-Infrared to Blue Light with TIPS-Anthracene as an Efficient Triplet–Triplet Annihilator

Nishimura

Gray

Allardice

et al. 2019

ACS Materials Lett.

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109

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Photon upconversion (PUC) via triplet-triplet annihilation (TTA) from near-infrared (NIR) to blue photons could have important applications especially to bio-imaging and drug delivery accompanied by photochemical reaction. The fundamental challenges in achieving this has been the large anti-Stokes shift combined with the need to efficiently sensitize within the biological transparency window (700-900 nm). This calls for materials combinations with minimal energy losses during sensitization and minimal energy requirements to drive efficient TTA. Here, we demonstrate efficient PUC converting from NIR energy to blue photons using the commercially available material 9,10-Bis[(triisopropylsilyl)ethynyl]anthracene (TIPS-Ac) as the annihilator. With a conventional triplet sensitizing system, TIPS-Ac performed TTA efficiency of 77 ± 3 % despite a relatively small driving force, compared to conventional TTA material converting from NIR to blue, for the TTA of less than 0.32 eV. Combined with Pt(II) meso-Tetraphenyl Tetrabenzoporphine (PtTPBP), which is a heavy atom triplet sensitizer that directly generates triplets upon NIR photon excitation, the resulting system allowed for an anti-Stokes shift of 1.03 eV. Our results highlight the use of direct triplet generation via NIR excitation as a useful path to achieving large anti-Stokes shift and also show that high TTA efficiencies can be achieved even in the absence of large driving energies for the TTA process.

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“…Organic ligands and p-systems PbSe Rubrene [25] Pentacene [26] PbS 5,11-Bis(triethylsilylethynyl)anthradithiophene [27] Rubrene (acceptor) [28] , 5-carboxylic acid tetracene (transmitter) [29,30] Tetracene [31] 2-Carboxylic acid TIPS-tetracene [32] 2-Benzoic acid TIPS-pentacene [33] Zinc b-tetraaminophthalocyanine [13] Poly[sodium 2-(2-ethynyl-4-methoxyphenoxy)acetate] [34] CdSe Anthracene derivatives [35] Pentacene derivatives [36] Oligothiophenecarboxylic acid [37] 1-Perylenecarboxylic acid (PCA) [38] 2-Chloro-9,10-bisphenylethynylanthracene (acceptor), PCA (transmitter) [39] Diphenylanthracene (acceptor), bis(pyridine) anthracene (transmitter) [40] Diphenylanthracene (acceptor), 9-anthracene carboxylic acid (transmitter) [41,42] Zinc b-tetraaminophthalocyanine [43] CsPbBr 3 PCA [44] 1-Naphthalenecarboxylic acid [45] Diphenylanthracene (acceptor), aminodiphenylanthracene (transmitter) [46] Two-dimensional MoS 2 Methyl orange, rhodamine 6G, methylene blue [47] Zinc phthalocyanine [48] Pentacene [49] To prevent surface reconstruction, the manifestation of defects and a deterioration of the electronic properties discussed above, the surfaces of QDs need to be passivated by some matrix. [52] In epitaxially grown QDs, this is achieved by embedding the QDs in another inorganic material with matching lattice constant.…”

Section: Inorganic Componentmentioning

confidence: 99%

Prospects of Coupled Organic–Inorganic Nanostructures for Charge and Energy Transfer Applications

et al. 2020

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European Research Council (ERC) under the European Unions Horizon 2020 research and innovation program (grant agreement No 802822). J.L. acknowledges funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germanys Excellence Strategy within the Cluster of Excellence PhoenixD (EXC 2122, Project ID 390833453) and the Caroline Herschel program of the Leibniz Universität Hannover. F.L. thanks the FCI for a Liebig Fellowship. Financial support for A.F and A.M.S provided by Deutsche Forschungsgemeinschaft (DFG German Research Foundation), project ID 407193529 is gratefully acknowledged. Open access funding enabled and organized by Projekt DEAL.

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Photon upconversion utilizing energy beyond the band gap of crystalline silicon with a hybrid TES-ADT/PbS quantum dots system

Abstract: Photon upconversion with an excitation of energy below the band gap of crystalline silicon was demonstrated with a hybrid system consisting of molecules based on a thiophene conjugated acene (i.e., TES-ADT) and lead sulphide (PbS) quantum dots.

Cited by 52 publications

References 44 publications

Photon Upconverting Solid Films with Improved Efficiency for Endowing Perovskite Solar Cells with Near‐Infrared Sensitivity

Photon Upconverting Solid Films with Improved Efficiency for Endowing Perovskite Solar Cells with Near‐Infrared Sensitivity

Photon Upconversion from Near-Infrared to Blue Light with TIPS-Anthracene as an Efficient Triplet–Triplet Annihilator

Prospects of Coupled Organic–Inorganic Nanostructures for Charge and Energy Transfer Applications

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