Optimization of in-device depleted passivation layer for InGaAs photodetectors



Optimization of Mesa Structured InGaAs Based Photodiode Arrays
Dolas, M. Halit; Çırçır, Kübra; Kocaman, Serdar (2017-04-13)
We design lattice matched InP/In0.53Ga0.47As mesa structured heterojunction p-n photodiodes with a novel passivation methodology based on a fully depleted thin p-InP layer. Mesa-structured detectors are targeted due to their competitive advantages for applications such as multicolor/hyperspectral imaging. Test detector pixels with different perimeter/area ratios are fabricated with and without etching thin InP passivation layer between pixels in order to comparatively examine passivating behavior. I-V chara...
Optimization of fabrication steps for n-type c-Si solar cells
Orhan, Efe; Ünalan, Hüsnü Emrah; Department of Metallurgical and Materials Engineering (2019)
Crystalline silicon (c-Si) solar cells fabricated on p-type wafers are still dominating the photovoltaic (PV) industry due to advantages in device processing and early focus on p-type cells in the development phase of the industry. Over the years, studies on n-type Czochralski (CZ) substrates have shown that they can be more desirable for the terrestrial applications due to superior material and process advantages such as higher minority carrier lifetime, easier passivation of the surface, absence of light ...
Implementation of the equivalence principle algorithm for potential integral equations
Farshkaran, Ali; Ergül, Özgür Salih; Department of Electrical and Electronics Engineering (2018)
In this thesis, a domain decomposition method based on the Huygens' principle for integral equations is studied. Step-by-step development of equivalence principle algorithm (EPA) is described for solving arbitrary shaped perfect electric conductor (PEC) and penetrable objects. The main advantage of EPA is its efficiency thanks to the enhanced conditioning hence accelerated iterative solutions of the matrix equations derived from discretizations. For further enhancing the efficiency, the multilevel fast mult...
Optimum design of steel space frames via bat inspired algorithm
Hasançebi, Oğuzhan (null; 2013-05-19)
Design optimization of steel space frames is a very popular topic in structural engineering due to economy saved in cost of the structures by optimization process. Although the final cost of a steel frame is affected by many factors, such as material, manufacturing, erection and transportation costs, the material cost of steel comprises a great deal of overall cost of the structure. Hence, the design optimization of steel frames is focused on weight minimization in the literature based on the assumption tha...
Electrical crosstalk suppression for mesa-based in-device passivated InGaAs photodetectors
Çırçır, Kübra; Kocaman, Serdar (2022-12-01)
Inclusion of an in-device passivation layer in mesa-based lattice-matched InGaAs photodetectors provides a lower dark current than the conventional mesa type structures. However, due to the high electric field in the passivation layer between the pixels, improved dark current characteristics come with increased electrical crosstalk. Manipulating the electrical field distribution with an additional thin epilayer promises to reduce this inter-pixel carrier collection without disturbing the primary aim of the ...
Citation Formats
K. Çırçır and S. Kocaman, “Optimization of in-device depleted passivation layer for InGaAs photodetectors,” Infrared Physics and Technology, pp. 360–364, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30524.