HgCdTe detectors for space and science imaging in France: general issues and latest achievements

Gravrand, O.; Rothman, J.; Cervera, C.; Baier, N.; Lobre, C.; Zanatta, J. P.; Boulade, O.; Moreau, Vincent; Fièque, B.

doi:10.1117/12.2296207

Cited by 3 publications

(4 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The cryostat used in the setup has been fully designed and manufactured at IFAE and was previously used to perform the thermal cycles and further qualification and validation tests of the Filter Wheel Assembly (FWA) of the ESA's Near Infrared Spectrograph and Photometer (NISP) instrument [23] [24] [25]. The vessel is made of aluminium with an inner volume of ∼120 liters where 1 Sampling Rate= 1 sample/second a copper plate of 500 x 500 mm is located, called cold plate, and allows to mount and align a custom optical system refrigerated up to 30K. Its huge cooling power is achieved thanks to a mechanically driven single-stage Gifford McMahon cold head Leybold COOLPOWER 250 MD [26] with cooling capacity greater than 175 W at 80K, which is connected to a helium (He) compressor unit Leybold COOLPACK 6000 HMD [26].…”

Section: Cryo-vacuum Setup Descriptionmentioning

confidence: 99%

“…F EW years ago, the European Space Agency (ESA) promoted the research around the development of large size detectors available for scientific missions. Taking advantage of their long expertise on this field [1] [2], two companies, CEA [3] and Lynred [4], developed the Astronomy Large Format Array detector (ALFA) which was addressed to the ESA's Near Infrared Large Format Sensor Array (NIRLFSA) roadmap for the development of large format focal plane arrays for low fluxes and low noise. The ALFA readout integrated circuit (ROIC), one of the key developments of this novel detector, is composed by a matrix of 2048 x 2048 pixels with 15 µm pitch and its overall size is close to 30 x 30 mm.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Integration of a Testbench for the Optical and Thermal Characterization of Near-Infrared Detectors Used in Ground and Space-Based Astronomy

Jiménez

Grau

Padilla

2021

IEEE Trans. Instrum. Meas.

View full text Add to dashboard Cite

The mercury-cadmium-tellurium (MCT) sensors are considered the ideal infrared detectors to equip the focal plane arrays (FPAs) of astronomical scientific missions and nowadays, Europe is not self-sufficient on this technology. To tackle this problem, the Astronomy European Infrared Detector (ASTEROID) project aims to provide Europe with the capability to manufacture high performance infrared focal plane arrays devoted to scientific use, space astronomy and ground-based telescope infrastructures. The resulting detector will be a hybridized MCT array with a CdZnTe substrate of 2k x 2k pixels and 15 µm of pixel pitch. The Institut de Física d'Altes Energies (IFAE) will lead the task to validate the detector performance with respect to the hybridization reliability between the readout integrated circuit (ROIC) and the MCT detector by submitting it to several low temperature thermal cycles. After every thermal stress, the detector will be optically characterized in order to measure any performance degradation and possible problems with the pixel operability. To perform such tasks, two custom setups, focused on optical and cryo-vacuum aspects were developed, which used in conjunction, allow to cool down the detector from the room temperature up to ∼30K while it is electro-optically characterized in terms of linearity, gain, quantum efficiency and cosmetics defects, among others. The whole cryo-vacuum system and the optical setup is fully described in this paper as part of the work packages assigned to IFAE to test the hybridized detector to assess the reliability at operating temperature and after several thermal cycles.

show abstract

Section: Cryo-vacuum Setup Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Integration of a Testbench for the Optical and Thermal Characterization of Near-Infrared Detectors Used in Ground and Space-Based Astronomy

Jiménez

Grau

Padilla

2021

IEEE Trans. Instrum. Meas.

View full text Add to dashboard Cite

show abstract

“…Tremendous efforts have been made to optimize mercury cadmium telluride (HgCdTe) infrared detector technology during the last five decades [5,6]. In the late 1990s, due to the improvement in the focal plane preparation technology and expansion of the scale of focal plane array devices, the focal plane array device size has exceeded 2 K × 2 K [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A study on the surface correction of large format infrared detectors

Zhang

Xing

2020

Semicond. Sci. Technol.

View full text Add to dashboard Cite

Large format hybrid infrared focal array detectors, which require a wide range and high resolution, are of significant technical importance for earth observation systems and scientific space programmes. A typical large hybrid infrared focal plane array (IRFPA) detector formed by a detector chip is directly hybridized to a silicon readout integrated circuit (Si-ROIC) via indium bumps. However, for a large format IRFPA detector, the connection rate of the indium bumps strongly depends on the warpage of the Si-ROIC and the detector chip, which usually results from technological processes. In this paper, a surface correction structure is proposed to optimize the warpage of the Si-ROIC and the detector chip before flip-chip. The warpage of the Si-ROIC is analysed by the finite element method. The simulation results are in good agreement with the experiment. After optimization, the warpage of a 2048 × 2048 Si-ROIC decreased from 13 μm to less than 3 μm. Thus, it is beneficial to improve the IRFPA bump connection rate. Compared with traditional growth stress films, this method is more flexible and has easy accessibility. Eventually, it could enhance the stability of the large format IRFPA detector.

show abstract

“…The narrow-gap ternary Hg 1−х Cd х Te compound (MCT) is widely used to create infrared photodetectors [1,2]. Currently, to form n-p junctions in MCT of p-type [3,4] and ntype [5,6], ion implantation of boron and arsenic ions, respectively, is mainly used.…”

Section: Introductionmentioning

confidence: 99%

Annealing kinetics of radiation defects in boron-implanted p-Hg_1−xCd_xTe

Talipov

Войцеховский

2018

Semicond. Sci. Technol.

View full text Add to dashboard Cite

The results of studying the annealing kinetics of the radiation-induced donor-type defects in boron implanted p-type Hg 1−x Cd x Te (MCT) are presented. The annealing kinetics of the radiation donor centers depend significantly on the dose of B + ions, that is on the initial level of structural defects generated in the MCT lattice by ion bombardment. The activation energy E A of annealing of donor defects generated by implantation of B + ions increases with increasing dose and temperature of the post-implantation heat treatment under the SiO 2 cap. The smaller the dose and the higher the initial hole concentration in p-MCT, the lower the temperature of a complete annealing of donor centers, which lies in the range 220-275 °C. In the initial stages of the postimplantation heat treatment, primary donor defects are annealed, and then, more stable secondary impurity-defect complexes are annealed. It was established for the first time that the activation energy of the donor defects annealing in bulk crystals and heteroepitaxial structures of MCT has two clearly pronounced regions: at low temperatures 90-130 °C, E A =0.06 eV and at Т=150-250 °C, E A =0.71-0.86 eV.

show abstract

HgCdTe detectors for space and science imaging in France: general issues and latest achievements

Cited by 3 publications

References 16 publications

Integration of a Testbench for the Optical and Thermal Characterization of Near-Infrared Detectors Used in Ground and Space-Based Astronomy

Integration of a Testbench for the Optical and Thermal Characterization of Near-Infrared Detectors Used in Ground and Space-Based Astronomy

A study on the surface correction of large format infrared detectors

Annealing kinetics of radiation defects in boron-implanted p-Hg_1−xCd_xTe

Contact Info

Product

Resources

About

HgCdTe detectors for space and science imaging in France: general issues and latest achievements

Cited by 3 publications

References 16 publications

Integration of a Testbench for the Optical and Thermal Characterization of Near-Infrared Detectors Used in Ground and Space-Based Astronomy

Integration of a Testbench for the Optical and Thermal Characterization of Near-Infrared Detectors Used in Ground and Space-Based Astronomy

A study on the surface correction of large format infrared detectors

Annealing kinetics of radiation defects in boron-implanted p-Hg1−xCdxTe

Contact Info

Product

Resources

About

Annealing kinetics of radiation defects in boron-implanted p-Hg_1−xCd_xTe