Infrared photo-resistors based on recrystallized amorphous germanium films on flexible substrates

Grayli, Siamack V.; Ferrone, Andrea; Maiolo, Luca; Iacovo, Andrea De; Pecora, A.; Colace, Lorenzo; Leach, Gary W.; Bahreyni, Behraad

doi:10.1016/j.sna.2017.06.005

Cited by 6 publications

(7 citation statements)

References 18 publications

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“…In the first step, a commercial IR sensor has been used to optimize the calibration system and then to realize a benchmark system for the prototype sensors (see Fig. 8.14a, b) [43,44].…”

Section: Short Range Sensormentioning

confidence: 99%

“…Acknowledgements This work has been funded by the Italian Ministry of Education, Universities and Research (MIUR) under the Flagship Project "Factories of the Future-Italy" (Progetto Bandiera "La Fabbrica del Futuro") [48], Sottoprogetto 1, research projects "FACTOry Technologies for HUMans Safety" (FACTOTHUMS) and "Improving human-robot cooperation and safety in shared automated workplaces of the automotive industry". The latter project was selected by the Canada-Italy Concurrent Call on Automotive Manufacturing R&D and its twin Canadian project was funded by Automotive Partnership Canada to assess the usability of the technological and architectural solutions in a pre-industrial automotive scenario [43,44].…”

mentioning

confidence: 99%

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Systemic Approach for the Definition of a Safer Human-Robot Interaction

Pecora

Maiolo

Minotti

et al. 2019

Factories of the Future

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Smart factories must speed up their processes to face new manufacturing challenges and, at the same time, demonstrate an extremely high degree of flexibility to reduce production costs and time. This kind of issues can be addressed by the cooperation between humans and robots in a mixed human-robot working environment. Robots have the compelling advantage of spatial precision and repeatability as well as the capability of applying defined forces. Humans, on the other hand, are especially skilled at complex manipulations and adapting to changing task requirements. In this complicate scenario of co-shared workplace and continuous human-robot interaction, safety strategies are a key requirement to avoid possible injuries to humans or fatal accidents. This chapter proposes a systemic approach to respond to these requirements. The approach merges and manages multiple sensing sources, redundant transmission protocols and software decision mechanisms, aiming to guarantee a continuous and reconfigurable co-share scenario that enables an operative interaction between human workers and robots in a controlled and safe environment. Furthermore, new technological solutions and innovative methodologies are presented for the definition of a safer workplace in human-robot interaction scenarios. 8.1 Scientific and Industrial Motivations The need to face the production of complex families of product, with short life cycles, often characterized by strongly variable production patterns, requires factories to be able to quickly evolve and reconfigure [1]. These reconfigurable factories

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“…In the first step, a commercial IR sensor has been used to optimize the calibration system and then to realize a benchmark system for the prototype sensors (see Fig. 8.14a, b) [43,44].…”

Section: Short Range Sensormentioning

confidence: 99%

mentioning

confidence: 99%

Systemic Approach for the Definition of a Safer Human-Robot Interaction

Pecora

Maiolo

Minotti

et al. 2019

Factories of the Future

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“…[7][8][9][10][11][12][13] At present, Ge has extensive and important applications in elds such as semiconductors, aerospace measurement and control, nuclear physics detection, optical ber communication, infrared optics, solar cells, chemical catalysts, and biomedicine. [14][15][16][17][18][19][20] Ge is one of the most dispersed elements and there is almost no concentrated Ge deposit in the Earth's crust. Thus, it is particularly important to nd suitable methods to enrich, prepare and purify Ge.…”

Section: Introductionmentioning

confidence: 99%

Fast and safe synthesis of micron germanium in an ammonia atmosphere using Mo₂N as catalyst

Wang

et al. 2018

RSC Adv.

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“…28 The amorphous germanium (a-Ge) thin film also has been studied for the infrared photoresistors. 29 Moreover, the heteroepitaxy of Ge on Si is a topic of research with significant technological importance. An epitaxial SiGe (epi-SiGe) layer has already been used in Sibased high-performance devices such as heterojunction-bipolar transistors and photodetectors.…”

Section: ■ Introductionmentioning

confidence: 99%

“…In addition, c-Ge has a high mobility, promoting its attractive application as the substrate in a metal oxide semiconductor field effect transistor (MOSFET). , Ge is also applied in the bottom cell of tandem solar cells as a form of a hydrogenated microcrystalline silicon germanium (μc-SiGe:H) thin film . The amorphous germanium (a-Ge) thin film also has been studied for the infrared photoresistors . Moreover, the heteroepitaxy of Ge on Si is a topic of research with significant technological importance.…”

Section: Introductionmentioning

confidence: 99%

Electron-Selective Epitaxial/Amorphous Germanium Stack Contact for Organic-Crystalline Silicon Hybrid Solar Cells

Chen

et al. 2018

ACS Appl. Energy Mater.

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Carrier transport properties can be improved through suppressing the charge carrier recombination and decreasing the contact resistance using the proper carrier-selective contact. In this work, an epitaxial/amorphous germanium (epi/a-Ge) stack thin film is introduced into the rear surface of organic–inorganic hybrid (OIH) solar cells as an efficient electron-selective contact. This novel electron-selective stack contact simultaneously contributes low recombinative and resistive losses through a three-material system composed of n-type silicon (n-Si), epitaxial silicon germanium (epi-SiGe), and amorphous germanium (a-Ge), which promotes the tailoring of band structures, the passivation of surface dangle bond defects, and the formation of Ohmic contact. The results show obvious improvement in the open-circuit voltage (V oc) (from 549.5 to 643.0 mV) and fill factor (FF) (from 70.5 to 75.4%), corresponding to the increase in the power conversion efficiency (PCE) of OIH solar cells (from 10.3 to 12.9%). This work indicates novel application of the carrier-selective stack contact to achieve high-performance OIH solar cells with a simple and low-temperature process.

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Infrared photo-resistors based on recrystallized amorphous germanium films on flexible substrates

Cited by 6 publications

References 18 publications

Systemic Approach for the Definition of a Safer Human-Robot Interaction

Systemic Approach for the Definition of a Safer Human-Robot Interaction

Fast and safe synthesis of micron germanium in an ammonia atmosphere using Mo₂N as catalyst

Electron-Selective Epitaxial/Amorphous Germanium Stack Contact for Organic-Crystalline Silicon Hybrid Solar Cells

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Infrared photo-resistors based on recrystallized amorphous germanium films on flexible substrates

Cited by 6 publications

References 18 publications

Systemic Approach for the Definition of a Safer Human-Robot Interaction

Systemic Approach for the Definition of a Safer Human-Robot Interaction

Fast and safe synthesis of micron germanium in an ammonia atmosphere using Mo2N as catalyst

Electron-Selective Epitaxial/Amorphous Germanium Stack Contact for Organic-Crystalline Silicon Hybrid Solar Cells

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Product

Resources

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Fast and safe synthesis of micron germanium in an ammonia atmosphere using Mo₂N as catalyst