Anil KottantharayilAssociate Professor, Department of Electrical Engineeringfor the NCPRE team

Academia Industry Meet, IIT Bombay, 2011

Indian Institute of Technology Bombay

Jawaharlal Nehru National Solar Mission (JNNSM) launched in January 2010 – 20 GW by 2022

The Mission document mentions NCPRE at IIT Bombay:“setting up of a National Centre for Photovoltaic Research & Education at IIT

Bombay, drawing upon its Department of Energy Science & Engineering and its Centre of Excellence in Nanoelectronics”

NCPRE

Education Research

Si Solar CellsNew

Materials & Devices

Solar PV Systems &

Modules

Characterization, Modeling & Simulation

2

Why NCPRE at IITB? Full-fledged Department of Energy Science & Engineering

Fully functional silicon fabrication facility at CEN

Strong activity in Power Electronics

Excellent infrastructure at Centre of Distance Education (EDUSAT + web)

Facility-sharing experience through INUP

Tradition of inter- and multi-disciplinary work at IITB

51 faculty members from 13 Departments/Schools are involved

Over 100 papers, 7 patents, 2 books in PV-related areas

Expertise and experience in the complementary thermal solar

Excellent links with industry, including AMAT, Tata BP Solar, BEL, Intel, Infineon, IBM, Hitachi, SRC, TSMC, etc.

A broad spectrum of activities and expertise – important to support a national mission

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Interaction with Academia & Industry IITB-Industry Workshop was held on 10th December 2009 30 participants from 22 Solar PV companies

IITB-Academia Workshop was held on 30th January 2010 39 participants from 26 academic institutions in India

Contacts already exist with many international institutions Washington University, USA Purdue University, USA IMEC, Belgium Iowa state university, USA NREL, USA UNSW, Australia

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5 year funding of $ 10.5 million (Rs. 47.5 crore) Strong Education + Research thrust

NCPRE

Education Research

Si Solar CellsNew

Materials & Devices

Solar PV Systems &

Modules

Characterization, Modeling & Simulation

5

NCPRE Investigators

S. No

Name Dept S. No

Name Dept

1 Prof. Juzer Vasi EE 27 Prof. M. Shojaei EE2 Prof. Chetan Singh Solanki ESE 28 Prof. Arindam Chowdhury Chem3 Prof. B.G.Fernandes EE 29 Prof. M. Asalam Phy4 Prof. Rajesh Gupta ESE 30 Prof. Suhas Joshi ME5 Prof. Shaibal K. Sarkar ESE 31 Prof. R. K. Singh ME6 Prof. P. Bhargav MEMS 32 Prof. Sudarshan Kumar Aero7 Prof. Sagar Mitra ESE 33 Prof. A. Ganesh ESE8 Dr. Meril Methew ESE 34 Prof. M. C. Chandorkar EE

9 Prof. V. Agrawal EE 35 Prof. K. Chatterjee EE10 Prof. Subhananda Chakrabarti EE 36 Prof. A. M. Kulkarni EE11 Prof. B.M. Arora EE 37 Prof. Girish Kumar EE12 Prof. Anil Kottantharayil EE 38 Prof. S. Ganguly EE13 Prof. Souvik Mahapatra EE 39 Prof. R. Banerjee ESE14 Prof. V.Ramgopal Rao EE 40 Prof. K. Trivedi IDC15 Prof. A. Q. Contractor Chem 41 Prof. K. Jain SoM16 Prof. Suryanarayana Doolla ESE 42 Prof. V. Kathuria SoM17 Prof. Pratibha Sharma ESE 43 Prof. K. Momaya SoM18 Prof. Prakash Ghosh ESE 44 Prof. K. Narayanan HSS19 Prof. Anil Kumar Chem 45 Prof. A. Rao CTARA20 Prof. Rajdip Bandyopadhyaya Chem Engg 46 Prof. K. Deb HSS21 Prof. M.B. Patil EE 47 Prof. R. Bairy HSS22 Prof. Anand Patwardhan SoM 48 Prof. S. Dattagupta EE23 Prof. R. K. Pant Aero 49 Prof. Manoj Neergat ESE24 Prof. V. Sethi Environ. 50 Dr. Nitin Kale EE25 Prof. R. Mohanty IDC 51 Dr. Trupti Parab EE26 Prof. R. Pinto EE 6

Programmes at IITB Ph.D. M.Tech. M.Sc. B.Tech. Minor programme at UG level

Preparation of Course Material Course Modules Laboratory Kits Teacher Training Programmes Training “Master Technicians”

Distance Education Web- and Satellite-based Post-Graduate Diploma for working professionals

Training programmes for Industry Short-term courses Certificate programmes Post-Graduate Diploma for working professionals

Indian National Photovoltaics Users’ Programme (as a separate project) 7

Si Solar Cells High Efficiency crystalline Si Solar Cells 3D junctions Silicon concentrator solar cells Novel technology for contact formation using temperature sensitive paste Slicing of silicon wafers for PV applications using wire electric discharge machining (WEDM)

New Materials and Devices Luminescence and QD concentrator solar cells Solid State Sensitized Solar Cells Transparent conducting oxides Thin film solar cells Investigation of spectral engineering of light absorption using nanostructures and infrared energy harvesting

Solar PV Systems and Modules Energy Storage Low cost power electronics solutions Novel approaches to energy generation using solar cells Technology assessment and foresight Product design; Rural deployment and testing of stand-alone solar PV systems

Characterization, Modelling and Simulation Material and cell characterization Performance and degradation evaluation of solar modules Reliability and performance New and improved characterization techniques Modeling and Simulation

In red: “Specific Deliverables”

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High Efficiency crystalline Si Solar Cells

Targets: Development of baseline processes (junction, metallization, texturing, ARC) for c-Si

solar cells (> 15%). Demonstration of more than 18% cell efficiency on 100 cm2 area Demonstration of more than 20% cell efficiency

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0.0 0.1 0.2 0.3 0.4 0.5 0.605

101520253035

0123456789

P (m

W/cm

2 )

J (m

A/cm

2 )

V(V)

Bare Si Ascut Si(2.5% TMAH) Ascut Si(15% TMAH) Polished Si(2% TMAH) Polished Si(15% TMAH

200 400 600 800 1000 12000

1020304050607080

% R

efle

ctan

ce

Wavelength

3D junctions

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Solid-state semiconductor sensitized solar cells of > 5 % efficiency

Control over the porosity and reducing defectsRole of the Porous Oxide Layer

From Adsorption to Conformal DepositionReduced back recombination and surface passivation

oxide

Adsorber

ms

VB

CB

Barrier

Barrier

ca.10-11 S

Interface modifications:Faster charge separation,

Lowering back recombinationpassivation

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Low Cost Inverters for Rural Applications Target: Household Consumers 250/800 VA

High Speed BLDC based water pumping system Target: Deep borewell to overhead tanks

Solar Inverter for Irrigation Purposes Low Cost 1 to 5 kVA inverter using MPPT

Laboratory Scale Micro Grid Develop control strategies to maintain quality and reliability

of power supply Testing of control strategies

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PV to grid connectivity and power quality issuesPV to grid connectivity and power quality issues

PV to Grid Connectivity

13

Evaluation of field performance of different technology solar modules with environmental parameters

Understanding of long-term performance degradation in different technology modules

Accelerated environmental testing to understand degradation issues and defect formation in different technology modules

Characterization of degraded modules to relate performance and defects in modules

Dedicated simulation tool to understand effect of non-uniform variation due to degradation

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NCPRE set up by the Government of India in October 2010 NCPRE will cater to the Jawaharlal Nehru National Solar

Mission’s educational, research and training thrusts NCPRE will be highly multi-disciplinary 51 faculty from 13 Departments at IITB; more faculty specializing

in PV being recruited IITB has a commitment for major initiatives in clean energy,

renewable energy, climate change NCPRE to look for strong industry collaborations NCPRE will have strong links with other educational institutions

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Thank you!

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