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pro vyhledávání: '"Shawn M. Willis"'
The nature of charge separation at the heterojunction interface of solution processed lead sulphide-zinc oxide colloidal quantum dot solar cells is investigated using impedance spectroscopy and external quantum efficiency measurements to examine the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::924756f78db1714c7d59372f9137f855
https://doi.org/10.1021/nl204323j
https://doi.org/10.1021/nl204323j
Autor:
Frank Tutu, Shawn M. Willis, Hazel E. Assender, Huiyun Liu, M. G. Peinado, Andrew A. R. Watt, James Andrew Robert Dimmock, Ian R. Sellers
Publikováno v:
Solar Energy Materials and Solar Cells. 102:142-147
Embedding quantum dots into the intrinsic layer of a p-i-n solar cell has been proposed as a method of increasing solar cell photocurrent by improving its long-wavelength light response. However, strong carrier localization and efficient radiative re
Publikováno v:
Organic Electronics. 13:687-696
The vacuum thermal evaporation of poly(3-hexylthiophene) (P3HT) and poly(thiophene) (PTh) conductive polymers with and without side groups is reported. The role of side groups in relation to structural and electronic properties is examined. FT-IR and
Autor:
Giuseppe Sforazzini, Andrew G Cook, Peter Kovacik, Patrick S. Grant, Andrew A. R. Watt, Shawn M. Willis, Hazel E. Assender
Publikováno v:
ACS Applied Materials & Interfaces. 3:11-15
The vacuum thermal evaporation of poly(3-hexylthiophene) (P3HT) for application in photovoltaic cells is demonstrated. Structural changes before and after evaporation are determined using GPC, UV-vis absorption spectroscopy, NMR, and FTIR. GPC showed
Publikováno v:
Journal of Nonlinear Optical Physics & Materials. 11:303-316
Laser beam cleanup properties of stimulated Raman scattering (SRS) in a multi-mode fiber have been characterized. It is shown that a fiber, which supports propagation of a highly aberrated pump beam, can generate a Gaussian-like Stokes beam consistin
Autor:
Huiyun Liu, Frank Tutu, M. G. Peinado, Ting Wang, Andrew A. R. Watt, Shawn M. Willis, Ian R. Sellers, C. E. Pastore
Publikováno v:
JOURNAL OF APPLIED PHYSICS. 111(4)
The use of high-growth-temperature GaAs spacer layers is demonstrated to significantly enhance the performance of multilayer InAs/GaAs quantum-dot solar cells. Threading dislocations are observed for a 30-layer quantum-dot structure with GaAs spacer