聚合物太阳能电池

N *
x
X
N * Se y
Se
X=S, PFO-SeBT X=Se, PFO-SeBSe
[Cao, Y., et al., Macromolecules 2005, 38, 244–253.]
[Eg = 1.24 eV, Wudl, F., et al., Chem. Mater. 2005, 17(16), 4031–4033.]
Байду номын сангаас
1.0 0.8 0.6 0.4 0.2
b
Solution Film as prepared Film annealed
0.5
0.0
PEHPVT
300 400 500 600 700
0.0 PMEHPVT 300 400 500 600 700
Wavelength (nm)
Wavelength (nm)
给-受体双缆型聚合物
[Ferraris, J. P.; et al., Opt. Mater. 1998, 9, 34-42. Sariciftci, N. S. et sl., J. Mater. Chem., 2002, 12, 1931––1943. Sariciftci, N. S. et al., J. Phys. Chem. B, 2002, 106, 70–76. ]
基于这种材料的光伏电池在 AM1.5,100 mW/cm2, Isc=0.42 mA/cm2,Voc=0.83 V PCE = 0.10%。 [Marcos Ramos, A.; et al. J. Am. Chem. Soc., 2001, 123, 6714–6715. ]
1. 通过与噻吩乙烯共聚拓宽MEH-PPV的吸收
R2 H H OCH 3 O
1.2
Polymers P3OPVT P3MOPVT P3DMOPVT P3DOPVT
H OCH 3 OCH3 H
n
(A)
d
P3OPVT P3MOPVT P3DMOPVT P3DOPVT
Normalized PL intensity
Absorbance (10 /nm)
1.0 0.8 0.6 0.4 0.2 0.0 300 400 500 600
Absorbance
0.8 0.6 0.4 0.2 0.0 300 400 500 600
(B)
PL
P3OPVT P3MOPVT P3DMOPVT P3DOPVT
700
800
-2
700
Wavelength (nm)
Wavelength (nm)
溶液吸收和荧光光谱
膜吸收光谱
0.5 mA
P3OPVT
Current (mA)
1.2 1.0 0.8 0.6 0.4 0.2 0.0
1.2 1.0 0.8 0.6 0.4 0.2 0.0 300
b
Absorption of solution Absorption of film PL of solution PL of film
Normalized PL intensity (A.U.)
基于氮杂芳环的窄带隙共轭聚合物光伏材料
N *
S
N * n
PFDTBT
S
S
基于PFDTBT/PCBM的器件 ,Voc＝1.03 V，Isc＝6.2 mA/cm2，PCE＝2.8%
[Inganäs, O. et al., Adv. Mater. 2003, 15, 988； Adv. Funct. Mater. 2006, 16, 667–674. ]
b
Under light In dark
-1.5 -1.0 -0.5
0.0
0.5
1.0
1.5
2
Voltage (V)
-1.5 -1.0 -0.5
0.0
0.5
1.0
1.5
Voltage (V)
OT-PPV Voc = 0.66V, Isc = 3.6 mA/cm2 FF = 0.45, η = 1.4%
-2.5 -2.0 -1.5 -1.0 -0.5
0.0
+
0.5
1.0
Potential (V vs Ag/Ag )
吸收光谱
循环伏安图
通过空间电荷限制电流(SCLC)的方法测定了聚合物的空穴迁移率：
MEH-PPV：μ0= 8.0×10-7 cm2/V s C2： μ0= 1.67×10-5 cm2/V s Properties of the polymer photovoltaic cells under white light (70 mW/cm2)
+
P o ten tia l(V vs A g/A g )
0.5
potential (V vs Ag/Ag )
[Jianhui Hou, et al, Macromolecules, 2006, 39: 594-603]
共轭支链上取代基对光伏性能的影响
R1 R1 O R2 a b c S
1.2 1.0 UV
0.0 0.5 1.0
+
Current (mA)
PT4
Potential (V vs Ag/Ag )
0.1m A
Current (mA)
-2.5 -2.0 -1.5 -1.0 -0.5 0.0 0.5
+
0.4 0.2
a
1.0
0.0 -0.2 -0.4 -0.6 -2.5 -2.0 -1.5 -1.0 0.0
[Jianhui Hou, et al., Synth. Met., 2005, 150, 297-304]
O
PTVMEH-PPV
S O
S
n
PTVMEH-PPV
1.0 Nomalized absorption 0.8 0.6 0.4
solution film
IPCE %
14 12 10 8 6
0.2 0.0 300 400 500 600 700 800
Polymers
MEH-PPV VOC (V) ISC (mA/cm2) FF (%) ηe (%)
0.69
2.09
37.5
0.77
C1
0.66
2.23
41.8
0.88
C2
0.66
2.68
42.6
1.13
C3
0.69
1.79
41.2
0.63
P3HTV
0.51
1.30
32.5
0.26
* For P3HTV based photovoltaic cell, PCBM was used instead of C60.
solution film as repared film annealed
Normalized absorption
1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0
Normalized absorption
c
1.2 1.0 0.8 0.6 0.4 0.2 0.0
d
Solution Film as prepared Film annealed
光伏特性 ITO/PEDOT:PSS /Polymer:PCBM(1:4)/Ca/Al
Current density (A/cm )
Current density (A/cm )
0.1 0.01 1E-3 1E-4 1E-5 1E-6 1E-7
2
a
1
Under light In dark
0.1 0.01 1E-3 1E-4 1E-5 1E-6 1E-7 1E-8
S * O
O
n OT-PPV
* O
n
*
n
*
MEHT-PPV
MEH-PPV
Normalized absorption (A. U.)
Normalized Absorption (A.U.)
1.2 1.0 0.8 0.6 0.4 0.2 0.0 300
a
absorption of solution absorption of film PL of solution PL of film
15
1500
η(cd/A)
1.0
Current (mA)
10 5 0
1000
0.5 0 5 10 15 20
2
500 0
Current(mA)
700
0
2
Bias (V)
4
6
8
Wavelength (nm)
EL spectra
I-V and L-V curves of the PLED based on MEHT-PPV
N * S S
N S N * n * S N APFO-Green1 N N S * n S
APFO-Green2
[Inganäs, O., et al., Advanced Functional Materials 2005, 15, 745. Polymer, doi:10.1016/j.polymer.2006.03.110]
Wavelength (nm)
[Jianhui Hou, et al, Macromolecules, 2006, 39: 594-603]
Nomalized absorption
Nomalized absorption
1.0
a
solution film as prepared film annealed
1.0
OT-PPV (operated at 9V) MEHT-PPV (operated at 7V) MEH-PPV (operated at 7V)
20
b
1.5
Current Light
2000
Brightness (cd/m )
Normalized EL (A. U.)
0.8 0.6 0.4 0.2 0.0 400 500 600
4 2 0 400 450 500 550 600 650 700
Wavelength(nm)
Wavelength (nm)
[Lijun Huo, Jianhui Hou, et al, Synth. Met.，2006, 156(2-4), 276-281.]
2. 烷硫基取代的 PPV 衍生物
S C8H17-n * *
P3MOPVT
P3DMOPVT
P3DOPVT
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
+
0.5
1.0
Potential (V vs Ag/Ag )
Cyclic voltammograms of the polymer films on platinum plates in an acetonitrile solution of 0.1 mol/L [Bu4N]PF6 at a potential sweep rate of 0.1 V/s.
MEHT-PPV Voc = 0.66V, Isc = 3.4 mA/cm2 FF = 0.4, η = 1.2%
[Jianhui Hou, et al., J. Polym. Sci., A. Polym. Chem., 2006, 44: 1279-1290.]
3. 以 phenylene-vinyl 为共轭支链的聚噻吩
1.2 1.0 0.8 0.6 0.4 0.2 0.0
Normalized PL intensity (A.U.)
400
500
600
700
800
400
500
600
700
800
Wavelength (nm)
Wavelength (nm)
OT-PPV
MEHT-PPV
电致发光特性 ITO/PEDOT:PSS /Polymer/Al
x=0.52
1.0 0.8 0.6 0.4 0.2 0.0
a
Absorbance (10 /nm)
b
1.2 1.0 0.8 0.6 0.4 0.2 0.0 -0.2 300 400 500 600
吸收光谱
a. 溶液 b. 膜
300
400
500
600
700
800
-2
700
Wavelength (nm)
PT1
300 400 500 600 700
PT2
300 400 500 600 700
Wavelength (nm)
Wavelength (nm)
PEHPVT (a), PMEHPVT (b), PT1 (c), 和 PT2 (d) 的吸收光谱, 热处理是 惰性气氛下130℃ 10 分钟.
b
PMEHPVT PT1 PT2 PT3
C1：噻吩乙烯含量10％ C2：噻吩乙烯含量10％
1.2
MEH-PPV
MEH-PPV C1 C2 C3 P3HTV
Nomalized absorption
1.0 0.8 0.6 0.4 0.2 0.0 300
C1 Current (mA) C2 C3 P3HTV
0.1mA
400
500
600
700
Wavelength (nm)
O
O
O
O
O2 N
O
O
2
O
2
*
S
* n
*
S
* n
*
S S
* * n
S S
* n
*
S
* n
*
S S
x
S S
1-x
*
n
PEHPVT PMEHPVT
Normalized absorption(A.U.)
PT1
PEHPVT PMEHPVT PT1 PT2 PT3 PT4
PT2
1.4
PT3
PT4
PEHPVT PMEHPVT PT1 PT2 PT3 PT4 P3HT