International Research Journal on Advanced Science Hub

The silicon based solar cells are expensive, and also said to have limited power conversion efficiency. Though a lot of organic, inorganic and organic-inorganic hybrid solar cells were developed, they could not sustain in long run. This has open doors for the development the ferroelectric based solar cells/photovoltaics. Because the ferroelectric based photovoltaics show high open circuit voltage, short circuit current/current density, unlimited power conversion efficiency, tunable bandgap, high polarization properties, etc. The main reason to shift the focus from semiconductor solar cells is,the ferroelectrics are said to be stable under changing environmental conditions. In addition, such materials help to develop thinner solar cells devices with low cost. Hence, an attempt has been made to understand the photovoltaic response of ferroelectric lead zirconate titanate (PZT). In this paper, we report the review on the photovoltaic properties of PZT films. The literature was collected from various internet sources.

PZT is a ferroelectric ceramic material that has acquired immense importance in the field of electronics industry. The main focus of this report is to present the electrical conductivity response of manganese and cerium modified lead zirconatetitanate (PZT). The conductivity response has been investigated with respect to frequency of applied ac electric field and temperature. The samples have been prepared by mixing high purity chemicals, through high temperature solid state route. The frequency response of electrical conductivity has been analysed on the basis of Maxwell-Wagner and Koop’s model. The temperature response of electrical conductivity indicated that the compounds exhibit Arrhenius behaviour.

Lead zirconatetitanate (PZT), one of the best piezoelectric material, possess prominent dielectric and ferroelectric properties. It is widely used in several applications such as transistors, ferroelectric memories, sensors, etc. After discovering the existence of ferroelectricity in PZT, various synthesis techniques have been developed to produce PZT in various forms. In this paper, we report an extensive review on different preparation methods of PZT. The analysis has been done on the basis of literature which was collected from different sources. On the basis of cost effectiveness, PZT can be prepared in ceramic and film forms using solid state synthesis and sol-gel methods respectively. This review also include other synthesis techniques such as co-precipitation method, hydrothermal assisted process, spray pyrolysis, pulsed laser deposition (PLD), chemical solution deposition (CSD), etc. Also, this paper report the kind of properties that have been investigated, under different methods.

In this communication an attempt has been made to review, in brief, on Curie temperatures (T_c) of lead zirconatetitanate near morphotropical phase boundary. This review also includes 52/48 PZT modified by cadmium (Cd⁺²) in various amounts such as 5%, 10%, and 15%. We are proposing an easy method of selecting a substitution element for synthesizing modified lead zirconatetitanate (PZT) ceramics. Our investigation revealed that substitution of +3 valence elements will enhance T_c values whereas the substitution of +2 valence elements will decrease T_c. The change in T_c values is also attributed to ionic radii of modifier ions.

Lead zirconate titanate (PZT), being one of the most widely investigated ferroelectric, plays a crucial role in the development of technologies related to memories, sensors, actuators, etc. In this work, the samples of Pb(Zr_0.35-xY_xTi_0.65)O₃ (x = 0.00, 0.10 and Y = Mn/Ce) composition were synthesized, to investigate their conduction mechanism as a function of frequency and temperature. The temperature response of conductivity of the samples, over selected frequencies, indicated reduction in the barrier properties of the materials. It is observed that the magnitude of conductivity, over a wide range of frequency, is higher for cerium (Ce) modified PZT and lower and manganese (Mn) modified PZT. The negative coefficient of resistance behavior has been observed, from the nature of the variation of the conductivity of samples. Significantly, the conductivity spectra of the compounds is governed by Jonscher’s power law.