Feb 15, 2021

[book] Moore's Law: The Untold Story

Daniel Foty 
Moore's Law: The Untold Story 
CreateSpace Independent Publishing Platform 
August 18, 2017; pp. 400; ISBN: 978-1974698431 
 
“Moore's Law' has entered popular parlance in a variety of ways. But what exactly is "Moore‘s Law?" And how did it happen?
In this book. Daniel Foty - a PhD. engineer and commercial-grade veteran of more than twenty-f‌ive years in the semiconductor industry and allied f‌ields - takes the reader through the tangled and bizarre sequence of events that eventually led to ‘Moore’s Law” and the ubiquitous silicon technology which has resulted. The deep roots of this remarkable story go back some twenty centuries, and that story involves an unlikely collection of happenstances. Gifts of nature, and totally unexpected developments. Along the way, the reader meets many of the players in that story - from the well-known (such as Benjamin Franklin and Gordon Moore) to the (unfortunately) less—well-known (such as Jack Kilby and Robert Noyce). In the f‌inal analysis, “Moore's Law" was neither imposed nor discovered - but instead represents a remarkable concatenation of a series of natural flukes that compounded into a juggernaut. 
Written for the non-specialist, the untold story of “Moore's Law" is told here with fresh depth and proper historical insight.


Feb 12, 2021

[paper] ACM) Model in VHDL-AMS

A. S. Kumar, Ch. Rekha, Y. D. S. Raju 
Behavioral Modeling of the Advanced Compact MOSFET (ACM) Model with VHDL-AMS 
OAIJSE, Vol. 6, Issue 1, January 2021 
ISSN (Online) 2456-3293 

*Holymary Institute Of Technology And Science, Bogaram(V), Keesara (M), Hyderabad

Abstract: This paper reports a VHDL-AMS implementation of the Advanced Compact MOSFET (ACM) model. This behavioral model aims at being a reference model for ACM code developers, helping to implement and maintain simulators specic code. Simulation results from classical testbenches are presented and con_rm the correctness of the proposed model.
Fig: The used methodology propose this testbench [ref]

[ref] A. L. T. B. da Fonseca and F. R. de Sousa, "Behavioral modeling of the Advanced Compact MOSFET (ACM) model with VHDL-AMS," 2008 Joint 6th International IEEE Northeast Workshop on Circuits and Systems and TAISA Conference, Montreal, QC, 2008, pp. 169-172
doi: 10.1109/NEWCAS.2008.4606348.

Abstract: This paper reports a VHDL-AMS implementation of the Advanced Compact MOSFET (ACM) model. This behavioral model aims at being a reference model for ACM code developers, helping to implement and maintain simulators specific code. Simulation results from classical testbenches are presented and confirm the correctness of the proposed model.

Feb 11, 2021

[symposium] ISDCS 2021 Hiroshima University

ISDCS 2021
3-5, March 2021
Hiroshima University, Higashi-Hiroshima, Japan

The ISDCS is a premium international forum for scholars, scientists, educators, students and engineers to exchange their latest findings and technological advances in the field of devices, circuits and systems.

Keynote Speakers
  • Prof. Parthasarathi Chakrabarti, Director, IIEST Shibpur and Department of Electronics Engineering, IIT(BHU), India
    "Advanced Materials and Methods for Fabrication of Thin-film Transistor (TFT)-based Sensors"
  • Prof. Shinji Kaneko, Hiroshima University, Japan
    "SDGs Initiatives at Hiroshima University: Integrating Global Strategy and Regional Vitalization"
Invited Speakers
  • Prof. Sanatan Chattopadhyay, University of Calcutta, India
    "Voltage Assisted Quantum Dot Based MOS Devices for Electronic and Optoelectronic Applications"
  • Prof. Partha Bhattacharya, IIEST Shibpur, India
    "Performance Improvement of Graphene Derivative based Gas sensors: Role of Functional Group Tuning and Ternary Junction Formation"
  • Prof. Hafizur Rahaman, IIEST Shibpur, India
    "Tunnel Field Effect Transistors: Challenges and Opportunities"
  • Prof. Nillohit Mukherjee, IIEST Shibpur, India
    "Metal Oxide Semiconductors with Carbon Nanomaterials for Efficient Supercapacitive Type Energy Storage Devices"
  • Prof. Shigeyasu Uno, Ritsumeikan University, Japan
    "Electrochemical Impedance Sensor for Non-invasive Living Cell Monitoring toward CMOS Cell Culture Monitoring Platform"
  • Mr. Shigeru Shiratake, Corporate Vice President, DRAM, Emerging Memory Process Integration and Device Technology Micron Technology, Inc., USA
    "Challenges for DRAM scaling and performance enhancement"
  • Prof. Rihito Kuroda, Tohoku University, Japan
    TBD

Previous Conference:

[PhD Thesis] Chiara ROSSI; A novel approach for SPICE modeling of light and radiation effects in ICs; Présentée le 29 janvier 2021 à EPFL Lausanne pour l’obtention du grade de Docteur ès Sciences; DOI:10.5075/epfl-thesis-8422 https://t.co/nKSO7dyI1I #semi https://t.co/ruaQTavMH1



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February 11, 2021 at 03:56PM
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[thesis] SPICE modeling of light and radiation effects in ICs

A novel approach for SPICE modeling of light and radiation effects in ICs
Chiara ROSSI
Présentée le 29 janvier 2021
à la Faculté des sciences et techniques de l’ingénieur Groupe de scientifiques IEL
Programme doctoral en microsystèmes et microélectronique
pour l’obtention du grade de Docteur ès Sciences
DOI:10.5075/epfl-thesis-8422

Modeling the interaction of ionizing radiation, either light or ions, in integrated circuits is essential for the development and optimization of optoelectronic devices and of radiation-tolerant circuits. Whereas for optical sensors photogenerated carriers play an essential role, high energy ionizing particles can be a severe issue for circuits, as they create high density of excess carriers in ICs substrate, causing parasitic signals. In particular, recent advances in CMOS scaling have made circuits more sensitive to errors and dysfunctions caused by radiation-induced currents, even at the ground level. TCAD simulations of excess carriers generated by light or radiation are not dedicated to large scale circuit simulations since only few devices can be simulated at a time and computation times are too long. Conversely, SPICE simulations are faster, but their accuracy is strictly dependent on the correctness of the compact models used to describe the devices, especially when dealing with photocurrents and parasitic radiation-induced currents.
The objective of this thesis is to develop a novel modeling approach for SPICE compatible simulations of electron-hole pairs generated by light and by high energy particles. The approach proposed in this work is based on the Generalized Lumped Devices, previously developed to simulate parasitic signals in High Voltage MOSFET ICs. Here, the model is extended to include excess carriers generation. The developed approach allows physics-based simulations of semiconductor structures, hit by light or radiation, that can be run in standard circuit simulators without the need for any empirical parameter, only relying on the technological and geometrical parameters of the structure, and without any predefined compact model. The model is based on a coarse mesh of the device to obtain an equivalent network of Generalized Lumped Devices. The latter predicts generation of excess carriers and their propagation, recombination and collection at circuit nodes through the definition of equivalent voltages, proportional to the excess carrier concentrations, and equivalent currents, proportional to the excess carrier gradients. The model is validated with commercial TCAD numerical simulations for different scenarios. Regarding light effects, the proposed strategy is applied to simulate various optoelectronic devices. Complete DC I-V characteristics of a solar cell and transient response of a photodiode are studied. Next, phototransistors are considered. After, a full pixel of a 3T-APS CMOS image sensor is analyzed. The photosensing device, described with Generalized Devices, is co-simulated with the in-pixel circuit, described with compact models. The impact of semiconductor parameters on pixel output and on crosstalk between adjacent pixels is predicted. Finally, radiation-induced soft errors in ICs are examined. Alpha particles at different energies hitting the substrate are simulated. Parasitic currents collected at contacts are studied as a function of particles position and energy. Funneling effect, which is a phenomenon specific to high injection, is also included in the model.
This work shows that the Generalized Lumped Devices approach can be successfully used for SPICE simulations of optoelectronic devices and for prediction of radiationinduced parasitic currents in ICs substrate. This thesis is a first step towards a complete and flexible tool for excess carriers modeling in standard circuit simulators.
Fig: Layout, mesh (gray dashed lines) and equivalent network of Generalized Lumped Devices (Generalized Homojunctions, Resistors and Diodes). The structure is uniformly illuminated from the left side, justifying a 1D discretization scheme.