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Can we use pn junction as amplifier Why?

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Proceedings Article•DOI Control of electric fields at the surface of p-n junctions R.L. Davies, F.E. Gentry - Show less +1 more 01 Jan 1962 13 Citations	As a consequence, it is very desirable to design high voltage pn junction devices so that the electric field at the surface is significantly lower than that within the body of the device.
Journal Article•DOI Formation of pn junctions by bonding of GaAs layer onto diamond Takashi Sugino, Teppei Itagaki, Junji Shirafuji - Show less +2 more 01 May 1996-Diamond and Related Materials 13 Citations	Thus a Diamond-GaAs pn junction can be formed by direct bonding.
Journal Article•DOI Modelling of the CMOS buried double-junction photodetector Sylvain Feruglio, V. Fouad Hanna, G. Alquie, G. Vasilescu - Show less +3 more 20 Jun 2005-Microwave and Optical Technology Letters 5 Citations	Moreover, it can be easily extended to any multilayer PN junction device.
Journal Article•DOI p-diamond/n-GaAs junctions formed by direct bonding Takashi Sugino, T. Itagaki, Junji Shirafuji - Show less +2 more 04 Jan 1996-Electronics Letters 6 Citations	A diamond/GaAs pn junction can be formed by direct bonding.
Open access•Journal Article•DOI Axial p‐n junction design and characterization for InP nanowire array solar cells Qian Gao, Ziyuan Li, Li Li, Kaushal Vora, Zhe Li, Ahmed Alabadla, Fan Wang, Yanan Guo, Kun Peng, Yesaya C. Wenas, Sudha Mokkapati, F Fouad Karouta, Hark Hoe Tan, Chennupati Jagadish, Lan Fu - Show less +14 more 01 Mar 2019-Progress in Photovoltaics 22 Citations	By modifying the junction design, the width and position of the p‐n junction can be varied effectively.
Journal Article•DOI Multifunctional Homogeneous Lateral Black Phosphorus Junction Devices Jingyuan Jia, Jiao Xu, Jin-Hong Park, Byoung Hun Lee, Euyheon Hwang, Sungjoo Lee - Show less +5 more 07 Mar 2017-Chemistry of Materials 25 Citations	The doping method we proposed in this paper can be applied to make a multifunctional homogeneous lateral p–n junction device.
Open access•Journal Article•DOI Photodiode properties of epitaxial Pb(Ti, Zr)O3/SrTiO3 ferroelectric heterostructures Yukio Watanabe, Motochika Okano - Show less +1 more 19 Mar 2001-Applied Physics Letters 30 Citations	The results support the formation of a pn like junction by ferroelectric oxides.
Journal Article•DOI Light‐emitting porous silicon diode with an increased electroluminescence quantum efficiency Peter Steiner, Frank Kozlowski, Walter Lang - Show less +2 more 24 May 1993-Applied Physics Letters 146 Citations	The pn junction formed in this way has strong rectifying characteristics.

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What are the application fields of pn junction?4 answersThe pn junction has various application fields. It is a fundamental element in the fabrication of diodes, bipolar junction transistors, and sensors such as photodetectors. The pn junction-based element can be used to create logical operation devices, which are smaller in size, higher in integration level, and can be driven by either voltage or current. PN junction diodes have practical applications in half wave and full wave rectifiers, logarithmic amplifiers, and limiters. The pn junction also has potential for future extension of applications, as reviewed in a chapter by Omura. Additionally, the formation of a PN junction near the interface of piezoelectric semiconductors has been studied, with various electromechanical fields associated with the junction calculated.

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