CTJ Photovoltaic Cell – 10 mm x 10 mm

CTJ Photovoltaic Cell – 10 mm x 10 mm
Triple-Junction Solar Cell for Terrestrial Applications
DATASHEET | SEPTEMBER 2012
SOLAR POWER
EMCORE’s Concentrating Triple-Junction (CTJ) solar cells with n-on-p polarity are
built on germanium substrates and incorporate a proprietary antireflective coating
that provides low reflectance over a wavelength range of 0.3 to 1.8µm. These
high-efficiency solar cells are optimized for terrestrial applications under
concentrated incident illumination and high current densities.
Features and Characteristics
Series interconnected triple-junction solar cells monolithically integrated on
germanium
Photovoltaic absorber materials and bandgap energies are 1.86eV InGaP,
1.40eV InGaAs, and 0.67eV Ge
Typical Current-Voltage
Parameters at 50 W/cm2, 25°C
Custom design is also available for variables such as cell size, operating
intensity, spectrum, and temperature
Weldable or solderable front and back contact metallization terminated in
silver/gold alloy
Parameter
Value at 25°C,
50 W/cm2
Efficiency (%)
39.6
A variety of shipping options are available, including waffle packs, tape and
reel, or processed wafers
Isc (Amps)
6.48
300 MW/yr manufacturing capacity
Imp (Amps)
6.34
Voc (Volts)
3.19
Vmp (Volts)
2.76
All cells are flash tested at concentration at 25°C
Nominal Temperature Coefficients at 50 W/cm2
Parameter
Relative, at 25°C
Efficiency
-0.04
absolute %/°C
-1080
PPM/°C
Vmp
-4.5
milliVolts/°C
-1610
PPM/°C
570
PPM/°C
570
PPM/°C
Jmp
[email protected]
Efficiency vs.
Concentration
Characteristics
Absolute, 10°C to 100°C Range
4.7
7.7
2
milliamps/cm /°C
-5
x10 Amps/Watt/°C
40
efficiency (%)
39
38
37
36
35
34
33
1500
(
1300
1100
900
700
500
300
100
t ti
Concentration (suns)
)
| REV 2012.09
Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice.
CTJ Photovoltaic Cell – 10 mm x 10 mm
Triple-Junction Solar Cell for Terrestrial Applications
DATASHEET
DATASHEET | SEPTEMBER 2012
SOLAR
POWER
SOLAR
POWER
Nominal Current-Voltage Characteristics
1
8
0.9
7
0.8
6
0.7
5
Amps
Relative photocurrent response
Angular Acceptance Characteristics
0.6
4
0.5
3
0.4
2
0.3
1
0
10
20
30
40
50
60
70
80
Angle of incidence relative to norm al (degrees)
90
0
0
0.5
1
1.5
2
2.5
Volts
| REV 2012.09
Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice.
3
3.5