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VẬT LIỆU ỨNG DỤNG
TRONG CHUYỂN HÓA
NĂNG LƯỢNG MẶT TRỜI
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TS. NGUYỄN TUYẾT PHƯƠNG
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ĐH KHOA HỌC TỰ NHIÊN TP.HCM – THÁNG 10 NĂM 2017
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1. Introduction
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Global energy
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Photovoltaic technology
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Materials in solar energy conversion
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2. Silicon solar cells
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3. Inorganic thin film solar cells
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Outline
6. Hybrid solar cells
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(BP) The world energy consumption:
- grew 5.6% in 2010, the highest rate since
1973
- will at least double by 2050 with a
predicted population of approximately
nine billion
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World Population Forecast to 2050
from International Futures
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World energy use [1]
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1. Introduction
Global energy
All the scenarios to 2050 have been analyzed
based on an increasing World population, a
slow economic growth, a reduction of
available fossil fuel, the problem of CO2
emission and climate change policy, etc. for a
sustainable development
[1] International Energy Agency: Energy
technology perspective 2008 – Scenarios and strategies to 2050
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The International Energy Agency (IEA):
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“How to achieve a clean, clever and competitive
energy future”
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Renewable energy resources: solar energy, wind
energy, geothermal energy, bio-energy, ocean
energy, hydrogen power and other natural resources
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1. Introduction
Global energy
Recommended annual production of World
renewable electricity (European
Commission: World energy technology
outlook – 2050)
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Use of renewable energy: 35 – 46% of total
power generation requirement by 2050
More than 30% of world electricity coming
from renewable energy
Beyond 2030, solar energy becomes an important
factor for the generation of electricity by for example
thermodynamic power plants and photovoltaic systems
integrated into buildings.
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Photovoltaic (PV): the most direct way to convert solar
radiation into electricity based on the photovoltaic effect
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(1) The absorption of light to generate an electron –
hole pair
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(2) The separation of electron and hole by the structure
of the device – electrons to the negative terminal and
holes to the positive terminal – thus generating
electrical power.
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~ 10% 60 TW
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1.7 x 105 Tera-Watt
600 TW
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1. Introduction
Photovoltaic
Energy demand : ~ 28 TW
(2050)
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1. Introduction
Photovoltaic
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1. Introduction
Photovoltaic operation
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2.0
Jsc
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Pmax
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1.0
Voc
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0.5
0.0
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J/ mA/cm
The standard condition for efficiency
measurement of solar cell:
1 Sun, AM 1.5 G, 25oC (1.000 W/m2)
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A solar cell is determined by measuring the
photo current density J at different potentials V.
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Voltage/ mV
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J – V curve of a DSC, produced with the N719 dye and
non-robust electrolyte.
Light intensity: 100 W/m2, active area of DSC: > 8.0
cm2, η: 7.05%, FF: 64%.
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Overall solar to electrical energy
conversion efficiency
η=
J sc Voc FF
Pin
Fill factor of the cell
Pmax
FF =
J sc Voc
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Updated table of solar cell performance
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1. Introduction
Photovoltaic
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Silicon Solar cells
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Silicon Solar cells
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Silicon Solar cells
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Inorganic thin film solar cells
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Inorganic thin film solar cells
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Inorganic thin film solar cells
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Hybrid solar cells
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Hybrid solar cells
Dye-sensitized Solar cells
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