Home

The optimization of electron transport layers to improve the performance of the solar cell devices has been performed through simulations and experiments

The simulations were performed by using GPVDM package. The power conversion efficiency (PCE) can be ramped up by adjusting the active layer thickness, and optimum active layer thickness was found to 500 nm for formamidinium based PSCs. Five different types of electron transport is used and among all, SnO2 has been found as an efficient electron transport layer material to increase the PCE further. PCE of 24.41% has been obtained for formamidinium tin iodide- based PSC against 27.49% for formamidinium lead iodide - based PSC.

We have also simulated the comparison of organic and inorganic Sn-and Pb-based active layer thickness on photovoltaic parameters and it has been found that with the increase in thickness up to 600 nm, PCE and other photovoltaic parameters increase with maximum PCE of 24.68 %, 23.23 %, 19.22 %, and 17.51 % for MAPbI3, CsPbI3, MASnI3, and CsSnI3 PSCs, respectively. But with further increase in thickness results in more charge recombination, resulting in a decrease in PCE and photovoltaic parameters. Thus, for different architecture of PSCs used in this study, an optimum active layer thickness was found to be 600 nm. Experimentally, we have investigated the effect of doping and co-doping on optical, structural, and electrical properties of SnO2 nanoparticles using different microscopic and spectroscopic tools. The UV-Vis DRS spectroscopy results revealed that the optical band gap reduced from 2.90 eV for pristine SnO2 to 2.26 eV for co-doped 1 weight % Ni-Zn-SnO2 nanoparticles and can be tuned with a variation of weight % of Ni. Further, the photoluminescence emissions of all SnO2 nanoparticles in the range of 307 to 494 nm are related to oxygen vacancies or defects. The electrical conductivity studies confirm that the synthesized nanoparticles exhibit excellent ohmic contact behavior and show a notable increase in electrical conductivity for 1% Ni-doped Zn-SnO2 nanoparticles.

1. Enigmol, a known anti-cancer 1-deoxyshingolipid and its stereo isomers have been synthesized by a new route starting from the chiral pool using both isomers of L-alanine via Stereoselective Grignard reaction and Cross metathesis reaction as the key steps.
2. The Enigmol analogues have been synthesized by varying chain lengths and an additional additional hydroxyl group on the C-4 position of Enigmol and its chain analogues. The key reaction involved the installation of different lipophilic chain lengths via stereoselective cross metathesis reaction followed by mCPBA epoxidation, Red-Al ring opening and deprotection for the chain analogues and OsO4/NMO mediated dihydroxylation for the 4-hydroxy substituted analogues on the earlier synthesized 1-deoxysphingosines.
3. The butyrate ceramides of the 1-deoxysphingosines have been synthesized using the oleic acid and butyric acid, a known chemo-preventative agents via N-Acylation using p-nitrophenyl oleate and butyrate respectively.
4. A library of peptidomimetic 1-deoxysphingosine ceramides by Multi Component UGI Reaction have been synthesized using different aldehydes, cyclohexyl isocyanide and butyric acid with the previously synthesized 1- deoxysphingosine
5. The in-vitro biological evaluation has been done on the PC-3 and HCT-116 cell lines and the IC50 value have been calculated giving the encouraging results

1) A new series of Energetic Ionic Liquid based salts were prepared with good oxygen balance based on urotropine, tetrazolium and triazolium.
2) A library of 3-amino-1,2,4-triazolium based salts by using aminotriazolone, nitrotriazolone, dinitrotriazolone and tetrazolone was synthesize.
3) EIL 3-amino-1,2,4-triazolium perchlorate was found to be highly sensitive towards impact and friction.
4) A new series of EIL/salts were prepared which exhibited good oxygen balance using 5-Aminotetrazolium perchlorate synthesized and showed excellent
5) A library of 1-H-2,3,4,5-tetraazolium based salts in combination with aminotriazolone, nitrotriazolone, dinitrotriazolone and tetrazolone was synthesized.
6) The impact and frictional sensitivity measurements was investigated at DRDO-TBRL and the as synthesized salts were found to be highly explosive in nature.

The conjugate was found to be QS inhibitor. It also showed potent in vitro inhibitory activity against biofilm formation due to reduction in twitching, swimming, and swarming motilities of P. aeruginosa. In silico molecular docking studies suggested that PZC 4 binds with the FptA, the outer membrane receptor of pyochelin indicating delivery of conjugate hence zingerone, inside the target organism. PZC possess therapeutic value as a ‘Trojan Horse’ entity and conjugate is transported inside the bacterium effectively through iron transport system after binding with siderophore receptor. PZC has been shown to have hepatoprotective potential in P. aeruginosa induced peritonitis mice model Therefore, this represents an innovative approach against multi-drug resistant Gram-negative bacterium P. aeruginosa. Hence, this study opens a path to employ PZC as potential drug candidate to suppress P. aeruginosa mediated infections. It can help in overcoming resistance.