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Showing 1 to 9 of 9 entries
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The Importance of Moisture in Hybrid Lead Halide Perovskite Thin Film Fabrication.

ACS nano

Eperon GE, Habisreutinger SN, Leijtens T, Bruijnaers BJ, van Franeker JJ, deQuilettes DW, Pathak S, Sutton RJ, Grancini G, Ginger DS, Janssen RA, Petrozza A, Snaith HJ.
PMID: 26247197
ACS Nano. 2015 Sep 22;9(9):9380-93. doi: 10.1021/acsnano.5b03626. Epub 2015 Aug 06.

Moisture, in the form of ambient humidity, has a significant impact on methylammonium lead halide perovskite films. In particular, due to the hygroscopic nature of the methylammonium component, moisture plays a significant role during film formation. This issue has...

Electrical Detection of Quantum Dot Hot Electrons Generated via a Mn.

The journal of physical chemistry letters

Barrows CJ, Rinehart JD, Nagaoka H, deQuilettes DW, Salvador M, Chen JI, Ginger DS, Gamelin DR.
PMID: 27966967
J Phys Chem Lett. 2017 Jan 05;8(1):126-130. doi: 10.1021/acs.jpclett.6b02219. Epub 2016 Dec 14.

An all-solid-state quantum-dot-based photon-to-current conversion device is demonstrated that selectively detects the generation of hot electrons. Photoexcitation of Mn

Polymer-modified halide perovskite films for efficient and stable planar heterojunction solar cells.

Science advances

Zuo L, Guo H, deQuilettes DW, Jariwala S, De Marco N, Dong S, DeBlock R, Ginger DS, Dunn B, Wang M, Yang Y.
PMID: 28845446
Sci Adv. 2017 Aug 23;3(8):e1700106. doi: 10.1126/sciadv.1700106. eCollection 2017 Aug.

The solution processing of polycrystalline perovskite films introduces trap states that can adversely affect their optoelectronic properties. Motivated by the use of small-molecule surfactants to improve the optoelectronic performance of perovskites, we demonstrate the use of polymers with coordinating...

The Role of Excitation Energy in Photobrightening and Photodegradation of Halide Perovskite Thin Films.

The journal of physical chemistry letters

Quitsch WA, deQuilettes DW, Pfingsten O, Schmitz A, Ognjanovic S, Jariwala S, Koch S, Winterer M, Ginger DS, Bacher G.
PMID: 29624057
J Phys Chem Lett. 2018 Apr 19;9(8):2062-2069. doi: 10.1021/acs.jpclett.8b00212. Epub 2018 Apr 10.

We study the impact of excitation energy on the photostability of methylammonium lead triiodide (CH

Tracking Photoexcited Carriers in Hybrid Perovskite Semiconductors: Trap-Dominated Spatial Heterogeneity and Diffusion.

ACS nano

deQuilettes DW, Jariwala S, Burke S, Ziffer ME, Wang JT, Snaith HJ, Ginger DS.
PMID: 29088539
ACS Nano. 2017 Nov 28;11(11):11488-11496. doi: 10.1021/acsnano.7b06242. Epub 2017 Nov 10.

We use correlated confocal and wide-field fluorescence microscopy to probe the interplay between local variations in charge carrier recombination and charge carrier transport in methylammonium lead triiodide perovskite thin films. We find that local photoluminescence variations present in confocal...

Solar cells. Impact of microstructure on local carrier lifetime in perovskite solar cells.

Science (New York, N.Y.)

deQuilettes DW, Vorpahl SM, Stranks SD, Nagaoka H, Eperon GE, Ziffer ME, Snaith HJ, Ginger DS.
PMID: 25931446
Science. 2015 May 08;348(6235):683-6. doi: 10.1126/science.aaa5333. Epub 2015 Apr 30.

The remarkable performance of hybrid perovskite photovoltaics is attributed to their long carrier lifetimes and high photoluminescence (PL) efficiencies. High-quality films are associated with slower PL decays, and it has been claimed that grain boundaries have a negligible impact...

Hot Hole Transfer Increasing Polaron Yields in Hybrid Conjugated Polymer/PbS Blends.

The journal of physical chemistry letters

Strein E, deQuilettes DW, Hsieh ST, Colbert AE, Ginger DS.
PMID: 26276203
J Phys Chem Lett. 2014 Jan 02;5(1):208-11. doi: 10.1021/jz402383x. Epub 2013 Dec 19.

We use quasi-steady-state photoinduced absorption (PIA) to study charge generation in blends of poly(3-hexylthiophene-2,5-diyl) (P3HT) with PbS nanocrystal quantum dots as a function of excitation energy. We find that, per photon absorbed, the yield of photogenerated holes present on...

Enhanced optoelectronic quality of perovskite thin films with hypophosphorous acid for planar heterojunction solar cells.

Nature communications

Zhang W, Pathak S, Sakai N, Stergiopoulos T, Nayak PK, Noel NK, Haghighirad AA, Burlakov VM, deQuilettes DW, Sadhanala A, Li W, Wang L, Ginger DS, Friend RH, Snaith HJ.
PMID: 26615763
Nat Commun. 2015 Nov 30;6:10030. doi: 10.1038/ncomms10030.

Solution-processed metal halide perovskite semiconductors, such as CH3NH3PbI3, have exhibited remarkable performance in solar cells, despite having non-negligible density of defect states. A likely candidate is halide vacancies within the perovskite crystals, or the presence of metallic lead, both...

Charge-Carrier Recombination in Halide Perovskites.

Chemical reviews

deQuilettes DW, Frohna K, Emin D, Kirchartz T, Bulovic V, Ginger DS, Stranks SD.
PMID: 31496228
Chem Rev. 2019 Oct 23;119(20):11007-11019. doi: 10.1021/acs.chemrev.9b00169. Epub 2019 Sep 09.

The success of halide perovskites in a host of optoelectronic applications is often attributed to their long photoexcited carrier lifetimes, which has led to charge-carrier recombination processes being described as unique compared to other semiconductors. Here, we integrate recent...

Showing 1 to 9 of 9 entries