High-speed nonlinear focus-induced photoresponse in amorphous silicon photodetectors for ultrasensitive 3D imaging applications

Bablich, Andreas; Müller, Maurice; Kienitz, Paul; Bornemann, Rainer; Ogolla, Charles Otieno; Butz, Benjamin; Choubey, Bhaskar; Bolívar, P. Haring

doi:10.1038/s41598-022-14330-7

“…The device short circuit photocurrent was converted into a voltage using transimpedance amplifiers (FEMTO DLCPA-200) prior to data recording with lock-in technique (Princeton 5210). A silicon photodetector (Hamamtsu S1337) served for referencing the optical power density [19].…”

Section: Methodsmentioning

confidence: 99%

Preparation and characterization of transferable encapsulated dye-sensitized solar cells

Hartwich,

Raghu,

Müller

et al. 2024

Preprint

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The increasing demand for sustainable energy as a means to combat the impact of climate change is addressed via a novel concept in the present work. Herein, the development of encapsulated dye-sensitized solar cells, canonically “solar capsules”, for photovoltaic applications on alternative surfaces, such as facades, is presented. The solar capsule assembly houses all components necessary for photovoltaic energy conversion, enclosed within a semiconductor nanotubular array, making them truly unique in their construction. This capsule-style unit enables an easy transfer and draft onto a wide range of materials and surfaces for photovoltaic functionalization and applications. This type of dye-sensitized solar cell typically consists of transferred solar capsules and two additional electrodes. The design and construction of solar capsules have high economic viability as they can seamlessly be up-scaled using commercially established techniques such as anodization and subsequent functionalization. This work demonstrates a working model of such a capsule by fabricating TiO2 nanotubes that are functionalized via facile dip- and spin-coating techniques in a wet lab at ambient conditions. These prototype solar capsules are characterized in bulk and are thoroughly investigated at the nanoscale for information on the chemical distribution of the constituents, as they may be influenced during the manufacturing process.

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“…The device short circuit photocurrent was converted into a voltage using transimpedance amplifiers (FEMTO DLCPA-200) prior to data recording with lock-in technique (Princeton 5210). A silicon photodetector (Hamamtsu S1337) served for referencing the optical power density [19].…”

Section: Methodsmentioning

confidence: 99%

Preparation and characterization of transferable encapsulated dye-sensitized solar cells

Hartwich,

Raghu,

Müller

et al. 2024

Preprint

0

View full text Add to dashboard Cite

The increasing demand for sustainable energy as a means to combat the impact of climate change is addressed via a novel concept in the present work. Herein, the development of encapsulated dye-sensitized solar cells, canonically “solar capsules”, for photovoltaic applications on alternative surfaces, such as facades, is presented. The solar capsule assembly houses all components necessary for photovoltaic energy conversion, enclosed within a semiconductor nanotubular array, making them truly unique in their construction. This capsule-style unit enables an easy transfer and draft onto a wide range of materials and surfaces for photovoltaic functionalization and applications. This type of dye-sensitized solar cell typically consists of transferred solar capsules and two additional electrodes. The design and construction of solar capsules have high economic viability as they can seamlessly be up-scaled using commercially established techniques such as anodization and subsequent functionalization. This work demonstrates a working model of such a capsule by fabricating TiO2 nanotubes that are functionalized via facile dip- and spin-coating techniques in a wet lab at ambient conditions. These prototype solar capsules are characterized in bulk and are thoroughly investigated at the nanoscale for information on the chemical distribution of the constituents, as they may be influenced during the manufacturing process.

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“…Over the past several decades, the development of various novel photodetectors (PDs) has been tremendously explored for wide fields of emerging optoelectronic technologies and photonic applications throughout our daily lives such as optical DOI: 10.1002/smtd.202300246 communications, [1][2][3] remote control devices, [4][5][6] smart image sensing, [7][8][9] and bio-photonic electronics. [10,11] Recently, PDs, which can convert light signals into electrical signals, are attracting considerable attention due to the increasing demands for accurate detection of various wavelength of light ranging from X-rays (0.03−3 nm), [12][13][14] ultraviolet (UV, 0.01−0.4 μm), [15][16][17] visible (0.4−0.75 μm), [18][19][20][21] to infrared (0.75 μm−1 mm) [22][23][24] as well as astronomical detection [25][26][27] to offer great potential in revolutionary improvements of sensory device performances with multiplexed functionalities.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Low‐Dimensional Nanomaterials for Photodetectors

Kim

¹

,

Lee

²

,

Lee

³

et al. 2023

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New emerging low‐dimensional such as 0D, 1D, and 2D nanomaterials have attracted tremendous research interests in various fields of state‐of‐the‐art electronics, optoelectronics, and photonic applications due to their unique structural features and associated electronic, mechanical, and optical properties as well as high‐throughput fabrication for large‐area and low‐cost production and integration. Particularly, photodetectors which transform light to electrical signals are one of the key components in modern optical communication and developed imaging technologies for whole application spectrum in the daily lives, including X‐rays and ultraviolet biomedical imaging, visible light camera, and infrared night vision and spectroscopy. Today, diverse photodetector technologies are growing in terms of functionality and performance beyond the conventional silicon semiconductor, and low‐dimensional nanomaterials have been demonstrated as promising potential platforms. In this review, the current states of progress on the development of these nanomaterials and their applications in the field of photodetectors are summarized. From the elemental combination for material design and lattice structure to the essential investigations of hybrid device architectures, various devices and recent developments including wearable photodetectors and neuromorphic applications are fully introduced. Finally, the future perspectives and challenges of the low‐dimensional nanomaterials based photodetectors are also discussed.

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High-speed nonlinear focus-induced photoresponse in amorphous silicon photodetectors for ultrasensitive 3D imaging applications

Cited by 7 publications

References 30 publications

Preparation and characterization of transferable encapsulated dye-sensitized solar cells

Preparation and characterization of transferable encapsulated dye-sensitized solar cells

Preparation and characterization of transferable encapsulated dye-sensitized solar cells

Recent Advances in Low‐Dimensional Nanomaterials for Photodetectors

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