Abstract: Dye sensitized solar cell have been fabricated since 19191 till date. In the previous year’s seven cells were fabricated and arranged in series to build a solar module for electricity generation under which 2.0 volt diode bulb was lightened. Further study was carried out here where the electrolyte was improved upon using potassium iodide with F- centre factor that enhances light harvesting but in the course of the study the fabricated DSSCs exhibited in stability due to the delay in carrying out the I-V characteristics. Three of these dye sensitized solar cells were successfully fabricated using natural dye from Laali stem bark (Isoplumbagin) dye as sensitizer, with two metallic composition titanium doxide/ Zinc oxide (TiO2/ZnO) on Flourine doped tin oxide as the substrate which comprises of the Anode or electrode and carbon soot as the counter electrode or the cathode. These three DSSCs were arranged in series to build a solar panel. From the results obtained, Current-voltage characteristics showed that current was 0.03A and voltage 2.0 m A with power output 0.06k watt and the curve showed a forward bias pattern as with the case of a diode. From the pattern of the curve showed that the DSSCs deviated from cells that display efficiency to a diode that operates with the PN theory.Abstract: Dye sensitized solar cell have been fabricated since 19191 till date. In the previous year’s seven cells were fabricated and arranged in series to build a solar module for electricity generation under which 2.0 volt diode bulb was lightened. Further study was carried out here where the electrolyte was improved upon using potassium iodide with F- ce...Show More
Abstract: Strip intercropping of coffee with enset could be an alternative approach to enhance resource use efficiency and land productivity, which is a common practice Southern Ethiopia. However, the optimum strip ratio of coffee to enset has been limited in the study area. In view of this, a field experiment was conducted at Awada Agriculture Research Sub-center between 2012 and 2018/19 to evaluate the effect of strip intercropping ratios of coffee to enset on yield and yield components of both crops and to determine economically optimum coffee to Enset strip intercropping ratio. The experiment was comprised of six treatments: sole coffee, sole Enset, 1C:1, 2:1, 3:1, and 4:1, and laid out in a randomized complete block design with three replications. The analysis of variance revealed that both coffee and enset growth, yield, and yield components were significantly affected by coffee-enset strip intercropping. Coffee to enset ratio of (3:1) was provided the highest pooled mean yield of coffee, closely followed by (sole coffee)) compared with others strip ratios. Concerning the economic yield of enset, sole enset offers the maximum yield related to other treatments. Similarly, the maximum total LER of 1.63 was recorded from the coffee to enset ratio of (3:1) implies a yield advantage of 63% achieved from this strip ratio. Therefore, strip intercropping of coffee to enset at 3:1 ratio could be recommended to the study area as revealed by the highest yield and total LER for sustainable production and productivity.Abstract: Strip intercropping of coffee with enset could be an alternative approach to enhance resource use efficiency and land productivity, which is a common practice Southern Ethiopia. However, the optimum strip ratio of coffee to enset has been limited in the study area. In view of this, a field experiment was conducted at Awada Agriculture Research Sub-...Show More
