Low Voltage CO$_2$-Gas Sensor Based on III–V Mid-IR Immersion Lens Diode Optopairs: Where we Are and How Far we Can Go?

Sotnikova, G. Yu.; Гаврилов, Г. А.; Александров, С. Е.; Kapralov, A. A.; Karandashev, S. A.; Matveev, B. A.; Remennyy, M. A.

doi:10.1109/jsen.2009.2033259

Cited by 31 publications

(15 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…1, this represents a change in power at 100% efficiency from 20 fW to over 10 pW. Further improvements of thermo-electric pumping designs could be relevant to the design of ultralow power (sub-lW) pulseoximetry systems for healthcare applications 17,18 and low power (>100 lW) gas detection systems, 19 where low-power infrared LED inefficiency creates a bottleneck for minimizing system power consumption.…”

Section: -4mentioning

confidence: 99%

Design for enhanced thermo-electric pumping in light emitting diodes

Gray

Santhanam

Ram

2013

Applied Physics Letters

View full text Add to dashboard Cite

We present a strategy for optimization of thermo-electric pumping in light emitting diodes (LEDs). We use a finite element model for charge transport in a GaInAsSb/GaSb double hetero-junction LED that is verified experimentally to consider optimal design and operation of low-bias LEDs. The wall-plug efficiency is shown to be enhanced by over 200× at nanowatt power levels and 20× at microwatt power levels. A design for room-temperature operation of a 2.2 μm LED with 100% efficiency is proposed—this represents a 110 °C reduction of the temperature required to observe unity efficiency.

show abstract

Section: -4mentioning

confidence: 99%

Design for enhanced thermo-electric pumping in light emitting diodes

Gray

Santhanam

Ram

2013

Applied Physics Letters

View full text Add to dashboard Cite

show abstract

“…В рамках этой модели были введены понятия аппаратной и передаточной функций [11], которые определяют все метрологические характеристики сенсора как измерите-ля концентрации газа. Такой подход позволяет сравнить ГА, выполненные на различной элементной базе и при различных условиях работы, определить требования к конфигурации сенсора и режимам работы излучателя и приемника для достижения предельно возможной чувствительности при заданном быстродействии.…”

Section: метрологические характеристики оптоэлектронного сенсора соunclassified

“…Это позволило перейти к разработке ГА СО 2 на основе оптопар с минимально возможными на-пряжением питания и энергопотреблением при высокой точности измерений и небольшом объеме пробы [9][10][11][12]. Последнее обстоятельство крайне важно при измерени-ях СО 2 в выдохе пациентов, особенно для новорожден-ных детей, имеющих малый объем легких [13].…”

Section: Introductionunclassified

Диодные оптопары на основе InAsSb для сенсоров углекислого газа, работающих в режиме реального времени

Александров¹,

Гаврилов²,

Капралов³

et al. 2018

Журнал Технической Физики

View full text Add to dashboard Cite

“…For spectroscopy, thermal blackbody sources are a common alternative, but they too are inefficient because only a small fraction of the emitted radiation is in the band of interest. A recent review found that the wall-plug efficiencies of the best commerciallyavailable sources for spectroscopy at λ =4.25µm were limited to < 0.5% [2]. In high-temperature environments such as downhole oilfield analysis, many of the deficiencies of LEDs are magnified.…”

Section: Introductionmentioning

confidence: 99%