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35 results on '"Young, Trevor L."'

1. Manipulating the Distributions of Na and Cd by Moisture‐Assisted Postdeposition Annealing for Efficient Kesterite Cu 2 ZnSnS 4 Solar Cells

Author

Sun, Heng, primary, Huang, Jialiang, additional, O’Neill, Adam, additional, Yun, Jae Sung, additional, Young, Trevor L., additional, Yan, Chang, additional, Sun, Kaiwen, additional, Li, Jianjun, additional, Nielsen, Michael P., additional, Cui, Xin, additional, Wang, Ao, additional, Seidel, Jan, additional, Stride, John A., additional, Green, Martin A., additional, and Hao, Xiaojing, additional

Published
2022
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2. Defect Engineering for Efficient Cu 2 ZnSnS 4 Solar Cells via Moisture‐Assisted Post‐Deposition Annealing

Author

Sun, Heng, primary, Huang, Jialiang, additional, Young, Trevor L., additional, Cong, Jialin, additional, Li, Jianjun, additional, Sun, Kaiwen, additional, Yan, Chang, additional, Soufiani, Arman Mahboubi, additional, Cui, Xin, additional, Nielsen, Michael P., additional, Zhang, Xueyun, additional, Stride, John A., additional, Green, Martin A., additional, and Hao, Xiaojing, additional

Published
2022
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3. Manipulating the Distributions of Na and Cd by Moisture‐Assisted Postdeposition Annealing for Efficient Kesterite Cu2ZnSnS4 Solar Cells.

Author

Sun, Heng, Huang, Jialiang, O'Neill, Adam, Yun, Jae Sung, Young, Trevor L., Yan, Chang, Sun, Kaiwen, Li, Jianjun, Nielsen, Michael P., Cui, Xin, Wang, Ao, Seidel, Jan, Stride, John A., Green, Martin A., and Hao, Xiaojing

Subjects
SOLAR cells, KESTERITE, PHOTOVOLTAIC power systems, HEAT treatment, HETEROJUNCTIONS, TRACE elements
Abstract

Effectively incorporating alkali metals or alternative isovalent cations into Cu2ZnSnS4 (CZTS) is considered one of the most promising strategies for realizing a step‐change improvement in the photovoltaic device performance. Herein, the local distribution of Na and Cd by a moisture‐assisted postdeposition annealing (MAPDA) treatment combined with a subsequent heterojunction heat treatment is manipulated. The MAPDA treatment facilitates the controllable reduction of the Na concentration, thus promoting the spontaneous diffusion of Cd into the heterojunction region. A subsequent 150 °C low‐temperature heterojunction heat treatment after MAPDA treatment enables further modification of Cd and Na distributions, leading to significantly enhanced optoelectronic properties at the CZTS/CdS heterojunction and greatly improved device performance with a peak conversion efficiency of 9.40%. The modified heterojunction significantly improves quasi‐Fermi‐level splitting under low‐photon injection, making CZTS solar cells more feasible in low‐light applications. This work provides an effective approach to simultaneously manipulate the distribution of Na and Cd, enabling pronounced modification of the heterojunction quality of CZTS solar cells and boost of conversion efficiencies. Insights gleaned herein may also be applicable to manipulating other critical trace elements in chalcogenide materials in general. [ABSTRACT FROM AUTHOR]

Published
2022
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5. Defect Engineering for Efficient Cu2ZnSnS4 Solar Cells via Moisture‐Assisted Post‐Deposition Annealing.

Author

Sun, Heng, Huang, Jialiang, Young, Trevor L., Cong, Jialin, Li, Jianjun, Sun, Kaiwen, Yan, Chang, Soufiani, Arman Mahboubi, Cui, Xin, Nielsen, Michael P., Zhang, Xueyun, Stride, John A., Green, Martin A., and Hao, Xiaojing

Subjects
SOLAR cells, SEMICONDUCTOR thin films, PHOTOVOLTAIC power systems, CRYSTAL grain boundaries, ENGINEERING
Abstract

Sulfide kesterite Cu2ZnSnS4 (CZTS) solar cells, containing earth‐abundant and environmentally benign constituents, are regarded as promising candidates for thin‐film photovoltaic technologies. CZTS device performance, however, is currently limited by severe nonradiative recombination caused by abundant deep‐level defects. Herein, an effective defect engineering approach for high bandgap CZTS solar cells using a newly introduced moisture‐assisted post‐deposition annealing treatment is reported. This treatment modifies the local chemical composition within the heterojunction and CZTS grain boundaries and enhances the incorporation of Cd within the CZTS layer during CdS deposition. Cd not only accumulates at the grain boundaries, but it also presents in grain interiors where it occupies Cu lattice sites. The overall modification of the local chemical environment suppresses deep level defects and activates relatively shallow acceptor CuZn antisites and Cu vacancies, giving rise to remarkably improved device performance. This work opens a new direction for defect engineering of kesterite materials, which may also be applicable to other thin film semiconductors. [ABSTRACT FROM AUTHOR]

Published
2022
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8. Response to commentaries on the Canadian Network for Mood and Anxiety Treatments/International Society for Bipolar Disorders 2013 updated Bipolar Disorder Guidelines

Author

Schaffer, Ayal, Parikh, Sagar V, Kennedy, Sidney H, Milev, Roumen, Frey, Benicio N, Goldstein, Benjamin I, Beaulieu, Serge, Alda, Martin, O'Donovan, Claire, MacQueen, Glenda, McIntyre, Roger S, Sharma, Verinder, Ravindran, Arun, Young, Trevor L, Bond, David J, Lam, Raymond W, and Yatham, Lakshmi N

Published
2013
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10. Canadian Network for Mood and Anxiety Treatments (CANMAT) and International Society for Bipolar Disorders (ISBD) collaborative update of CANMAT guidelines for the management of patients with bipolar disorder: update 2013

Author

Yatham, Lakshmi N, Kennedy, Sidney H, Parikh, Sagar V, Schaffer, Ayal, Beaulieu, Serge, Alda, Martin, OʼDonovan, Claire, MacQueen, Glenda, McIntyre, Roger S, Sharma, Verinder, Ravindran, Arun, Young, Trevor L, Milev, Roumen, Bond, David J, Frey, Benicio N, Goldstein, Benjamin I, Lafer, Beny, Birmaher, Boris, Ha, Kyooseob, Nolen, Willem A, and Berk, Michael

Published
2013
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13. Gas chromatography–mass spectrometry analyses of encapsulated stable perovskite solar cells

Author

Shi, Lei, primary, Bucknall, Martin P., additional, Young, Trevor L., additional, Zhang, Meng, additional, Hu, Long, additional, Bing, Jueming, additional, Lee, Da Seul, additional, Kim, Jincheol, additional, Wu, Tom, additional, Takamure, Noboru, additional, McKenzie, David R., additional, Huang, Shujuan, additional, Green, Martin A., additional, and Ho-Baillie, Anita W. Y., additional

Published
2020
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15. Canadian Network for Mood and Anxiety Treatments (CANMAT) and International Society for Bipolar Disorders (ISBD) collaborative update of CANMAT guidelines for the management of patients with bipolar disorder: update 2009

Author

Yatham, Lakshmi N, Kennedy, Sidney H, Schaffer, Ayal, Parikh, Sagar V, Beaulieu, Serge, OʼDonovan, Claire, MacQueen, Glenda, McIntyre, Roger S, Sharma, Verinder, Ravindran, Arun, Young, Trevor L, Young, Allan H, Alda, Martin, Milev, Roumen, Vieta, Eduard, Calabrese, Joseph R, Berk, Michael, Ha, Kyooseob, and Kapczinski, Flávio

Published
2009
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23. الادارة الناجحة للمشروعات : صنع النجاح

Author

Young, Trevor L., عجينة، هبة،, Young, Trevor L., and عجينة، هبة،

Subjects
Organizational change, Project management, Success, Time management
Abstract

ان كتاب الادارة الناجحة للمشروعات يعد مرشدا اساسيا لمن يبحث عن تحسين معدلات نجاح المشروعات, فهو يساعد المديرين علي تحقيق التوازن بين احتياجات العميل و المشروع و الفريق و المنظمة, حيث يضم تقنيات مجربة جيدا

Published
2014

26. Successful Project Management

Author

Young, Trevor L. and Young, Trevor L.

Subjects
Time management, Project management
Abstract

Successful Project Management, 4th edition, is an essential guide for anyone who wants to improve the success rate of their projects. It will help managers to maintain a balance between the demands of the customer, the project, the team and the organization. Covering the more technical aspects of a project from start to completion it contains practised and tested techniques, covering project conception and start-up, how to manage stake holders, effective risk management, project planning and launch and execution. Also including a brand new glossary of key terms, it provides help with evaluating your project as well as practical checklists and templates to ensure success for any ambitious project manager.

Published
2013

35. Molecular Abnormalities in Postmortem Brains of Subjects with Mood Disorders

Author

Dowlatshahi, Dariush, Young, Trevor L., and Medical Sciences

Subjects
Medical Sciences
Abstract

Biochemical and structural abnormalities have been reported in postmortem brain tissue from patients with mood disorders. Studies of the molecular pharmacology of drugs used in the treatment of mood disorders have led to a reinterpretation of earlier models of neuropathology in these diseases. Noradrenergic and serotonergic hypotheses have been expanded to include postsynaptic intracellular signal transduction pathways, regulation of gene expression, and synaptic plasticity. Because much of this evidence was obtained from postmortem brain, the experiments in this study also used postmortem tissue to examine the neuropathology of mood disorders. Human postmortem brain tissue was obtained from the Stanley Consortium Neuropathology Foundation and consisted of pieces of temporal and occipital cortex, and slices of prefrontal cortex and hippocampus from patients with bipolar affective disorder (BD), major depressive disorder (MDD), schizophrenia (SCZ) and controls (N = 15 per group). Components of the cAMP system were examined, as were potential target transcription and neurotrophic factors. Morphological consequences arising from altered cAMP signalling such as sprouting and DNA fragmentation were also investigated. There was a trend towards blunted temporal cortex adenylyl cyclase activity in subjects with mood disorders, and decreased occipital cortex Gas in lithium-treated BD subjects. Temporal cortex CREB level~ were decreased in antidepressant-untreated MDD subjects compared to controls, and normal in those subjects treated by antidepressants at the time of death. Temporal cortex CREB levels were decreased in BD patients treated with anticonvulsants relative to those not treated by anticonvulsants at the time of death. When assessing the effect of suicide on cAMP signalling, subjects who died as a result of suicide had lower temporal cortex CREB levels and CRE-binding than subjects who died of other causes. This effect was most evident in the MDD group. In hippocampus, BDNF levels were increased in subjects treated by antidepressants compared to subjects not treated by these medications at the time of death. This finding was more pronounced in the MDD group. Hippocampal studies also showed that BD subjects had increased mossy fibre staining relative to controls and other diagnoses, suggesting increased sprouting of the dentate gyrus axons. These postmortem findings are consistent with recent animal and cell models of antidepressant and mood stabilizer pharmacology. The changes in post-receptor signalling and hippocampal sprouting are also consistent with current conceptualizations of the neurobiology of mood disorders. These studies support the use of postmortem brain tissue as a clinically relevant research model, and add to the growing literature elucidating the pathophysiology of mood disorders and the molecular pharmacology of their treatments. Doctor of Philosophy (PhD)

Published
2003

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