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Alan T. Yiu
Researcher at Lawrence Berkeley National Laboratory
Publications - 7
Citations - 1239
Alan T. Yiu is an academic researcher from Lawrence Berkeley National Laboratory. The author has contributed to research in topics: Polymer solar cell & Organic solar cell. The author has an hindex of 5, co-authored 7 publications receiving 1168 citations. Previous affiliations of Alan T. Yiu include University of California, Berkeley & University of California.
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Journal ArticleDOI
Side-chain tunability of furan-containing low-band-gap polymers provides control of structural order in efficient solar cells.
Alan T. Yiu,Pierre M. Beaujuge,Pierre M. Beaujuge,Olivia P. Lee,Claire H. Woo,Michael F. Toney,Jean M. J. Fréchet,Jean M. J. Fréchet +7 more
TL;DR: PDPP2FT is used to demonstrate that linear alkyl side chains can be used to promote thin-film nanostructural order and increase the correlation lengths of both π-π stacking and lamellar spacing, leading to a substantial increase in the efficiency of bulk heterojunction solar cells.
Journal ArticleDOI
Efficient Small Molecule Bulk Heterojunction Solar Cells with High Fill Factors via Pyrene-Directed Molecular Self-Assembly
Olivia P. Lee,Alan T. Yiu,Alan T. Yiu,Pierre M. Beaujuge,Pierre M. Beaujuge,Pierre M. Beaujuge,Claire H. Woo,Claire H. Woo,Thomas W. Holcombe,Jill E. Millstone,Jill E. Millstone,Jessica D. Douglas,Jessica D. Douglas,Mark S. Chen,Jean M. J. Fréchet,Jean M. J. Fréchet,Jean M. J. Fréchet +16 more
TL;DR: This work has shown that attaching C2-pyrene as the small molecule end-group to a diketopyrrolopyrrole core leads to materials with a tight, aligned crystal packing and favorable morphology dictated by π-π interactions, resulting in high power conversion efficiencies and high fill factors.
Journal ArticleDOI
Enhanced solid-state order and field-effect hole mobility through control of nanoscale polymer aggregation
Mark S. Chen,Olivia P. Lee,Jeremy R. Niskala,Alan T. Yiu,Christopher J. Tassone,Kristin Schmidt,Pierre M. Beaujuge,Seita S. Onishi,Seita S. Onishi,Michael F. Toney,Alex Zettl,Alex Zettl,Jean M. J. Fréchet +12 more
TL;DR: Analysis of furan-containing diketopyrrolopyrrole polymers synthesized with similar optoelectronic properties reveal that less soluble polymers with linear side chains exhibit larger crystalline domains, pack considerably more closely, and align with a greater preference for in-plane π-π packing.
Journal ArticleDOI
A mechanistic understanding of processing additive-induced efficiency enhancement in bulk heterojunction organic solar cells.
Kristin Schmidt,Christopher J. Tassone,Jeremy R. Niskala,Jeremy R. Niskala,Alan T. Yiu,Alan T. Yiu,Olivia P. Lee,Olivia P. Lee,Thomas M. Weiss,Cheng Wang,Jean M. J. Fréchet,Pierre M. Beaujuge,Michael F. Toney +12 more
TL;DR: This work presents how additives change the polymer conformation in the casting solution leading to a more intermixed phase-segregated network structure of the active layer which results in a 5-fold enhancement in efficiency.
Journal ArticleDOI
Solution‐Processed, Molecular Photovoltaics that Exploit Hole Transfer from Non Fullerene, n‐Type Materials
Jessica D. Douglas,Jessica D. Douglas,Mark S. Chen,Mark S. Chen,Jeremy R. Niskala,Jeremy R. Niskala,Olivia P. Lee,Olivia P. Lee,Alan T. Yiu,Alan T. Yiu,Eric P. Young,Jean M. J. Fréchet,Jean M. J. Fréchet,Jean M. J. Fréchet +13 more
TL;DR: This work presents a new generation of high-performance liquid chromatography platforms for high-resolution 3D image analysis that can be distinguished from traditional 3D models by providing real-time 3D Raman-like images of the Na6(CO3)– Na4(SO4)2 complex.