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1 – 3 of 3A. Pauchard, B. Furrer, Z. Randjelovic, A. Rochas, D. Manic and R.S. Popovic
A fully integrated sensor microsystem for blue/ultraviolet radiation detection is presented. The photosensitive part combines a blue/UV selective stripe‐shaped photodiode with a…
Abstract
A fully integrated sensor microsystem for blue/ultraviolet radiation detection is presented. The photosensitive part combines a blue/UV selective stripe‐shaped photodiode with a small compensation infrared photodiode. A transimpedance amplifier with 1 GΩ feedback resistor is integrated on the same silicon chip. The main features of the op amp are a low offset (<0.5mV) and fail‐safe operation. This sensor has a maximal responsivity of 150 mV/nW at λ = 420 nm, corresponding to 43 percent quantum efficiency. A ratio of the responsivities at 420 nm and 1 μm as large as 560 is achieved. The system has a noise equivalent power of 5 10‐13 W. The 2.2 mm2 microsystem is realized in a standard CMOS 0.5 μm process.
Ying Wei, Xueyuan Cai, Jinzhi Ran and Jianhong Yang
The purpose of this paper is to investigate the dependence of dark current on threading dislocations (TDs) in relaxed Ge layer for Ge/Si heterojunction photodetectors.
Abstract
Purpose
The purpose of this paper is to investigate the dependence of dark current on threading dislocations (TDs) in relaxed Ge layer for Ge/Si heterojunction photodetectors.
Design/methodology/approach
The analysis of the effects of TDs is based on SRH generation and recombination mechanism used in two‐dimensional drift‐diffusion numerical simulation.
Findings
It is found that the TDs in Ge layer acting as the recombination centers lead to large dark current densities of devices, and the recombination rate is affected by the impurity out‐diffusion from Si substrate. Besides, the TDs, being the acceptor‐like defects simultaneously, form band barrier at Si/Ge interface with lightly doped Si substrates, thus limiting the minority carrier transport and resulting in low dark current densities.
Originality/value
The simulation results are excellently consistent with the experimental data and indicate that the reduction of threading dislocation densities (TDDs), especially in Ge buffer layer, dramatically decreases dark currents densities of Ge/Si photodetectors. The investigation can be applied to imbue devices with desired characteristics.
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Dwi Mariyono, Annis Nur Alifatul Kamila and Akmal Nur Alif Hidayatullah
This study aims to explore the relationship between global unity and cultural diversity in an interconnected world, examining how globalization influences cultural exchange while…
Abstract
Purpose
This study aims to explore the relationship between global unity and cultural diversity in an interconnected world, examining how globalization influences cultural exchange while preserving identities. Using hybrid thematic content analysis (HTCA), it reveals how cross-cultural collaboration can be fostered amid global challenges like climate change, health crises and technology. The research offers insights into integrating global efforts with local cultural nuances to create sustainable solutions. By bridging qualitative and quantitative approaches, it provides new perspectives on harmonizing global interconnectedness with cultural preservation in governance, technological innovation, diplomacy and education.
Design/methodology/approach
This research applied content analysis, thematic analysis and HTCA to examine global unity and cultural diversity. Content analysis highlighted key themes in international frameworks, whereas thematic analysis delved into elements promoting cultural preservation and adaptation. HTCA synthesized these insights, combining content-focused themes with broader cultural, economic and policy perspectives. Data sources included academic literature, international policy documents and case studies from UNESCO and regional cultural policies.
Findings
The findings reveal that while globalization drives global unity, cultural diversity remains crucial for preserving individual identities. Key themes include multiculturalism, cultural exchange, hybridization and resistance to homogenization. While globalization can erode local traditions, it also fosters cultural enrichment, seen in fusion cuisine, multilingualism and ethical fashion. The research identifies strategies for balancing global unity and cultural diversity, such as hybrid approaches to environmental sustainability, integrating cultural insights into global health and inclusive technological innovations like AI and virtual reality. It also highlights the role of institutions like UNESCO in promoting cultural diplomacy and the challenges in balancing global governance with cultural diversity.
Research limitations/implications
This research is limited by its reliance on secondary data from policy documents and literature, without primary data from affected communities or policymakers. Future studies could incorporate interviews and surveys to gain first-hand perspectives. In addition, the geographic focus on documented globalization effects limits broader applicability; more inclusive case studies across diverse cultural contexts are recommended.
Practical implications
The study offers actionable insights for policymakers, educators and cultural leaders to promote inclusive cultural exchange and hybridization strategies. It emphasizes balancing globalization benefits with cultural heritage protection. Practical applications in education, health and technology should consider cultural differences for more inclusive and effective solutions, such as integrating global citizenship and cultural sensitivity in educational policies.
Social implications
The study emphasizes how intercultural understanding and collaboration can enhance social cohesion in multicultural societies. It advocates for celebrating diversity, fostering cultural dialogue and promoting inclusive global policies to build peace and address global issues while maintaining diverse identities.
Originality/value
This study’s originality lies in its methodological triangulation, using HTCA as a novel approach to unify content and thematic insights. By integrating content analysis, thematic analysis and HTCA, this research offers a unique multidimensional analysis of global unity and cultural diversity, revealing how these aspects can coexist within globalization.
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