L
Liang-Yi Chang
Researcher at Massachusetts Institute of Technology
Publications - 9
Citations - 1910
Liang-Yi Chang is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Quantum dot & Energy conversion efficiency. The author has an hindex of 9, co-authored 9 publications receiving 1815 citations.
Papers
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Journal ArticleDOI
Colloidal PbS Quantum Dot Solar Cells with High Fill Factor
Ni Zhao,Timothy P. Osedach,Timothy P. Osedach,Liang-Yi Chang,Scott M. Geyer,Darcy D. Wanger,Maddalena Binda,Alexi C. Arango,Moungi G. Bawendi,Vladimir Bulovic +9 more
TL;DR: A consistent mechanism for device operation is developed through a circuit model and experimental measurements, shedding light on new approaches for optimization of solar cell performance by modifying the interface between the QDs and the neighboring charge transport layers.
Journal ArticleDOI
Inorganic–Organic Hybrid Solar Cell: Bridging Quantum Dots to Conjugated Polymer Nanowires
Shenqiang Ren,Liang-Yi Chang,Sung-Keun Lim,Jing Zhao,Matthew J. Smith,Ni Zhao,Vladimir Bulovic,Moungi G. Bawendi,Silvija Gradečak +8 more
TL;DR: CdS quantum dots were bound onto crystalline P3HT nanowires through solvent-assisted grafting and ligand exchange, leading to controlled organic-inorganic phase separation and an improved maximum power conversion efficiency of 4.1% under AM 1.5 solar illumination.
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Improved Current Extraction from ZnO/PbS Quantum Dot Heterojunction Photovoltaics Using a MoO3 Interfacial Layer
Patrick O. Brown,Richard R. Lunt,Ni Zhao,Timothy P. Osedach,Darcy D. Wanger,Liang-Yi Chang,Moungi G. Bawendi,Vladimir Bulovic +7 more
TL;DR: It is demonstrated that improvements in power conversion efficiency may be attained for ZnO/PbS heterojunction quantum dot photovoltaics through the incorporation of a MoO(3) interlayer between the PbS colloidal quantum dot film and the top-contact anode.
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Carrier multiplication yields in PbS and PbSe nanocrystals measured by transient photoluminescence
TL;DR: In this paper, an assessment of carrier multiplication yields in PbSe and PbS nanocrystals (NCs) by a quantitative analysis of biexciton and exciton dynamics in transient photoluminescence decays is presented.
Journal ArticleDOI
Perspective on the Prospects of a Carrier Multiplication Nanocrystal Solar Cell
TL;DR: The finding of bulklike CM in NCs suggests that the main promise of quantum confinement is to boost the photovoltage at which carriers can be extracted, and research directions that may result in effective use of CM in a solar cell are discussed.