This paper explains the device structure and operation of image sensors and solar cells. Both are semiconductor devices operating with the same physical principle of detecting photons. A high efficiency of the photon to electron energy conversion is very much desired in both devices. Image sensors now use a very advanced and scaled down CMOS fabrication process technology to achieve high performance features such as the excellent short wave blue light sensitivity for good color reproduction, the low noise and the no image lag picture quality for filmless and mechanical free action cameras. On the other hand, solar cells are still now built with the primitive floating N+P single junction type photodiode to minimize the fabrication process cost but with very low energy conversion efficiency of about 20%. It is explained in details that the depletion region of the PN junction is not the only place where we can achieve photo electron and hole pair separations effectively. The short-wave blue light has only 1000 Å silicon crystal penetration depth. The pinned surface P+P Gaussian doping profile has a very important role to achieve a better photon to energy conversion efficiency, especially for the short-wave blue light. Electrostatic and dynamic behaviors of Pinned Surface P+PNP Double Junction type Dynamic Photo Transistor and Pinned Surface P+PNPN Triple Junction type Dynamic Photo Thyristor are analyzed in details. Both of them are shown to be expected to have much excellent photon-to-electron energy conversion efficiency.
Published in | International Journal of Systems Science and Applied Mathematics (Volume 6, Issue 2) |
DOI | 10.11648/j.ijssam.20210602.13 |
Page(s) | 55-76 |
Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
Copyright |
Copyright © The Author(s), 2021. Published by Science Publishing Group |
Pinned Buried Photodiode, Double Junction Dynamic Photo Transistor, Triple Junction Dynamic Photo Thyristor, Empty Potential Well, Rotary Shutter, Global Shutter, Surface Barrier Potential, Double Junction Type Solar Cell
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APA Style
Yoshiaki Hagiwara. (2021). Electrostatic and Dynamic Analysis of P+PNP Double Junction Type and P+PNPN Triple Junction Type Pinned Photodiodes. International Journal of Systems Science and Applied Mathematics, 6(2), 55-76. https://doi.org/10.11648/j.ijssam.20210602.13
ACS Style
Yoshiaki Hagiwara. Electrostatic and Dynamic Analysis of P+PNP Double Junction Type and P+PNPN Triple Junction Type Pinned Photodiodes. Int. J. Syst. Sci. Appl. Math. 2021, 6(2), 55-76. doi: 10.11648/j.ijssam.20210602.13
AMA Style
Yoshiaki Hagiwara. Electrostatic and Dynamic Analysis of P+PNP Double Junction Type and P+PNPN Triple Junction Type Pinned Photodiodes. Int J Syst Sci Appl Math. 2021;6(2):55-76. doi: 10.11648/j.ijssam.20210602.13
@article{10.11648/j.ijssam.20210602.13, author = {Yoshiaki Hagiwara}, title = {Electrostatic and Dynamic Analysis of P+PNP Double Junction Type and P+PNPN Triple Junction Type Pinned Photodiodes}, journal = {International Journal of Systems Science and Applied Mathematics}, volume = {6}, number = {2}, pages = {55-76}, doi = {10.11648/j.ijssam.20210602.13}, url = {https://doi.org/10.11648/j.ijssam.20210602.13}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijssam.20210602.13}, abstract = {This paper explains the device structure and operation of image sensors and solar cells. Both are semiconductor devices operating with the same physical principle of detecting photons. A high efficiency of the photon to electron energy conversion is very much desired in both devices. Image sensors now use a very advanced and scaled down CMOS fabrication process technology to achieve high performance features such as the excellent short wave blue light sensitivity for good color reproduction, the low noise and the no image lag picture quality for filmless and mechanical free action cameras. On the other hand, solar cells are still now built with the primitive floating N+P single junction type photodiode to minimize the fabrication process cost but with very low energy conversion efficiency of about 20%. It is explained in details that the depletion region of the PN junction is not the only place where we can achieve photo electron and hole pair separations effectively. The short-wave blue light has only 1000 Å silicon crystal penetration depth. The pinned surface P+P Gaussian doping profile has a very important role to achieve a better photon to energy conversion efficiency, especially for the short-wave blue light. Electrostatic and dynamic behaviors of Pinned Surface P+PNP Double Junction type Dynamic Photo Transistor and Pinned Surface P+PNPN Triple Junction type Dynamic Photo Thyristor are analyzed in details. Both of them are shown to be expected to have much excellent photon-to-electron energy conversion efficiency.}, year = {2021} }
TY - JOUR T1 - Electrostatic and Dynamic Analysis of P+PNP Double Junction Type and P+PNPN Triple Junction Type Pinned Photodiodes AU - Yoshiaki Hagiwara Y1 - 2021/06/16 PY - 2021 N1 - https://doi.org/10.11648/j.ijssam.20210602.13 DO - 10.11648/j.ijssam.20210602.13 T2 - International Journal of Systems Science and Applied Mathematics JF - International Journal of Systems Science and Applied Mathematics JO - International Journal of Systems Science and Applied Mathematics SP - 55 EP - 76 PB - Science Publishing Group SN - 2575-5803 UR - https://doi.org/10.11648/j.ijssam.20210602.13 AB - This paper explains the device structure and operation of image sensors and solar cells. Both are semiconductor devices operating with the same physical principle of detecting photons. A high efficiency of the photon to electron energy conversion is very much desired in both devices. Image sensors now use a very advanced and scaled down CMOS fabrication process technology to achieve high performance features such as the excellent short wave blue light sensitivity for good color reproduction, the low noise and the no image lag picture quality for filmless and mechanical free action cameras. On the other hand, solar cells are still now built with the primitive floating N+P single junction type photodiode to minimize the fabrication process cost but with very low energy conversion efficiency of about 20%. It is explained in details that the depletion region of the PN junction is not the only place where we can achieve photo electron and hole pair separations effectively. The short-wave blue light has only 1000 Å silicon crystal penetration depth. The pinned surface P+P Gaussian doping profile has a very important role to achieve a better photon to energy conversion efficiency, especially for the short-wave blue light. Electrostatic and dynamic behaviors of Pinned Surface P+PNP Double Junction type Dynamic Photo Transistor and Pinned Surface P+PNPN Triple Junction type Dynamic Photo Thyristor are analyzed in details. Both of them are shown to be expected to have much excellent photon-to-electron energy conversion efficiency. VL - 6 IS - 2 ER -