Sudha Kartha, C; Sreekumar, K; Rani, Joseph; Subramanyan, N V; Nimmi, K P; Pramitha, V(Optical Society of America, April 14, 2009)
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Abstract:
Incorporation of silver ions into a dye-sensitized poly(vinyl alcohol)/acrylamide photopolymer is observed
to give better performance compared to other metal-ion-doped photopolymer holographic recording
media. Plane-wave transmission gratings were recorded in the photopolymer films using a He–Ne
laser, and various holographic parameters were optimized so as to explore maximum potential of the
material for various holographic applications. Silver-doped films showed good energy sensitivity,
and gratings recorded in optimized film exhibited a diffraction efficiency of more than 75%. The
potential of the material for holographic data storage applications is also studied using peristrophic
multiplexing
Sudha Kartha, C; Vijayakumar, K P; Sreekumar, K; Maheshkumar, M V; Rajesh Menon, M R(WILEY-VCH Verlag GmbH & Co, September 22, 2011)
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Abstract:
In this paper, we report the results of investigations on the
potential of spray pyrolysis technique in depositing electron
selective layer over larger area for the fabrication of inverted
bulk-heterojunction polymer solar cells. The electron selective
layer (In2S3) was deposited using spray pyrolysis technique and
the linear heterojunction device thus fabricated exhibited good
uniformity in photovoltaic properties throughout the area of the
device. An MEH-PPV:PCBM inverted bulk-heterojunction
device with In2S3 electron selective layer (active area of
3.25 3.25 cm2) was also fabricated and tested under indoor
and outdoor conditions. Fromthe indoor measurements employing
a tungsten halogen lamp (50mW/cm2 illumination), an opencircuit
voltage of 0.41V and a short-circuit current of 5.6mA
were obtained. On the other hand, the outdoor measurements
under direct sunlight (74mW/cm2) yielded an open-circuit
voltage of 0.46V and a short-circuit current of 9.37mA