Malayala Granthasoochi 2004 of Government Brennen College, Tellycherry: The first electronic catalogue in Indian languages

Government Brennen College released the Malayala Granthasoochi 2004 -CDROM on 30.03.2004 which is first electronic catalogue using search mechanism for original Malayalam script based on UNESCO's CDS/ISIS. This is an extract from the talk conducted in the Seminar in connection with the release of the publication. The talk covers earlier similar attempts as well as the research for developing script and DBMS applications in Malayalam that the computers can search and sort according to the syntactic and semantic relations. The contributions of Sri. K H Hussain, Sri K M Govi and the Rachana Aksharavedi which proclaimed Our Script for Our Language etc are stressed. Expresses the hope that in the development of State Information Infrastructure, in which major part of the content is to be in Malayalam, the concerned can utilize the technology successfully experimented in the present product. In this context the author who managed the project considers that the technology used is highly relevant for ICT application to participatory development as well as providing information services at grass roots level

Device Engineering of Perovskite Solar Cells to Achieve Near Ideal Efficiency

Despite the exciting recent research on perovskite based solar cells, the design space for further optimization and the practical limits of efficiency are not well known in the community. In this manuscript, we address these aspects through theoretical calculations and detailed numerical simulations. Here, we first provide the detailed balance limit efficiency in the presence of radiative and Auger recombination. Then, using coupled optical and carrier transport simulations, we identify the physical mechanisms that contribute towards bias dependent carrier collection, and hence low fill factors of current perovskite based solar cells. Curiously, we find that while Auger recombination is not a dominant factor at the detailed balance limit, it plays a significant role in device level implementations. Surprisingly, our device designs indicate that it is indeed possible to achieve efficiency and fill factor greater than 25% and 85%, respectively - even in the presence of Auger recombination