Zobrazeno 1 - 10
of 150
pro vyhledávání: '"Johnston, MB"'
Autor:
Fiona Moghaddas, MBBS PhD FRACP, Nikolaos Tsiougkos, MD, Alexandros Grammatikos, MSc PhD FRCPath, Philip D. Bright, MBBS MSc FRCPath, Sarah Johnston, MB ChB FRCPath, Mark Gompels, MBBS FRCPath MD
Publikováno v:
World Allergy Organization Journal, Vol 16, Iss 1, Pp 100740- (2023)
Objective: The objective was to review COVID-19 vaccine allergy advice and guidance requests received and assess the impact of advice outcome on vaccination outcome. Design: A retrospective analysis of requests for advice and guidance regarding COVID
Externí odkaz:
https://doaj.org/article/a85b1f78a7f04e2a953c0ee7cae28f2a
Autor:
Caprioglio, P, Smith, JA, Oliver, RDJ, Dasgupta, A, Choudhary, S, Farrar, MD, Ramadan, AJ, Lin, Y-H, Christoforo, MG, Ball, JM, Diekmann, J, Thiesbrummel, J, Zaininger, K-A, Shen, X, Johnston, MB, Neher, D, Stolterfoht, M, Snaith, HJ
In this work, we couple theoretical and experimental approaches to understand and reduce the losses of wide bandgap Br-rich perovskite pin devices at open-circuit voltage (VOC) and short-circuit current (JSC) conditions. A mismatch between the intern
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::316b24fed32c471c184594faaadb221b
https://ora.ox.ac.uk/objects/uuid:6fd46968-ab7f-4f5d-b30b-298fa98f7303
https://ora.ox.ac.uk/objects/uuid:6fd46968-ab7f-4f5d-b30b-298fa98f7303
Autor:
Hu, S, Zhao, P, Nakano, K, Oliver, RDJ, Pascual, J, Smith, JA, Yamada, T, Truong, MA, Murdey, R, Shioya, N, Hasegawa, T, Ehara, M, Johnston, MB, Tajima, K, Kanemitsu, Y, Snaith, HJ, Wakamiya, A
Publikováno v:
Advanced materials (Deerfield Beach, Fla.).
Interfaces in thin-film photovoltaics play a pivotal role in determining device efficiency and longevity. Herein, we study the top surface treatment of mixed tin-lead (∼1.26 eV) halide perovskite films for p-i-n solar cells. We are able to promote
Autor:
Lohmann, KB, Patel, JB, Rothmann, MU, Xia, CQ, Oliver, RDJ, Herz, LM, Snaith, HJ, Johnston, MB
Publikováno v:
ACS Energy Letters
Understanding and controlling grain growth in metal halide perovskite polycrystalline thin films is an important step in improving the performance of perovskite solar cells. We demonstrate accurate control of crystallite size in CH3NH3PbI3 thin films
Publikováno v:
Nature Communications
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
Mixed halide perovskites can provide optimal bandgaps for tandem solar cells which are key to improved cost-efficiencies, but can still suffer from detrimental illumination-induced phase segregation. Here we employ optical-pump terahertz-probe spectr
Autor:
Peng, K, Parkinson, P, Gao, Q, Boland, JL, Li, Z, Wang, F, Wenas, YC, Davies, CL, Fu, L, Johnston, MB, Tan, HH, Jagadish, C, Ieee
Publikováno v:
University of Manchester-PURE
Broadband photoconductive terahertz detectors based on undoped InP single nanowires were demonstrated. By further design and growth of an axial n+-i-n+ structure to reduce the contact resistance, highly-sensitive n+-i-n+ InP single-nanowire terahertz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4ab0aa933a4e08f2b67a05a7d01b81f
https://ora.ox.ac.uk/objects/uuid:620c1e4c-7224-478c-a2d2-37e9f27a0c4a
https://ora.ox.ac.uk/objects/uuid:620c1e4c-7224-478c-a2d2-37e9f27a0c4a
Progress in ultrafast terahertz (THz) communications has been limited due to the lack of picosecond switchable modulators with sufficient modulation depth. Gallium arsenide nanowires are ideal candidates for THz modulators as they absorb THz radiatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::266aba27e396022b5876124e67806e7c
Autor:
Martinez Maestro, L, Qianqian, L, Wang, Y, Young, M, Patel, JB, Milot, RL, Lunt, RR, Snaith, HJ, Johnston, MB, Herz, LM
Publikováno v:
Lin, Q, Wang, Z, Young, M, Patel, J B, Milot, R L, Maestro, L M, Lunt, R R, Snaith, H J, Johnston, M B & Herz, L M 2017, ' Near-Infrared and Short-Wavelength Infrared Photodiodes Based on Dye-Perovskite Composites ', Advanced Functional Materials, vol. 27, no. 38 . https://doi.org/10.1002/adfm.201702485
Advanced Functional Materials
Advanced Functional Materials
Organohalide perovskites have emerged as promising light-sensing materials because of their superior optoelectronic properties and low-cost processing methods. Recently, perovskite-based photodetectors have successfully been demonstrated as both broa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::867c15391043ea8eca7e9d795cd8c08e
https://doi.org/10.1002/adfm.201702485
https://doi.org/10.1002/adfm.201702485
Publikováno v:
Joyce, H J, Boland, J L, Davies, C L, Baig, S A & Johnston, M B 2016, ' A review of the electrical properties of semiconductor nanowires: insights gained from terahertz conductivity spectroscopy ', Semiconductor Science and Technology, vol. 31, no. 10 . https://doi.org/10.1088/0268-1242/31/10/103003
Accurately measuring and controlling the electrical properties of semiconductor nanowires is of paramount importance in the development of novel nanowire-based devices. In light of this, terahertz conductivity spectroscopy has emerged as an ideal non
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5faaaecd305e4a53dbcd64f11d4a55ed
https://www.repository.cam.ac.uk/handle/1810/257387
https://www.repository.cam.ac.uk/handle/1810/257387