Enhanced performance of polymer solar cells by employing a ternary cascade energy structure

Qiaoshi An; Fujun Zhang; Lingliang Li; Zuliang Zhuo; Jian Zhang; Weihua Tang; Feng Teng

doi:10.1039/c4cp01411a

Enhanced performance of polymer solar cells by employing a ternary cascade energy structure

Qiaoshi An
, Fujun Zhang^*
, Lingliang Li
, Zuliang Zhuo
, Jian Zhang
, Weihua Tang
, Feng Teng

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

We present a route to successfully tackle the two main limitations, low open circuit voltage (V_oc) and limited short circuit-density (J _sc), of polymer solar cells (PSCs) based on poly(3-hexylthiophene) (P3HT) as an electron-donor. The indene-C60 bisadduct (ICBA) was selected as an electron acceptor to improve the open circuit voltage (V_oc). The narrow band gap polymer poly[(4,8-bis-(2-ethylhexyloxy)-benzo[1,2-b:4,5- b′]dithiophene)-2,6-diyl-alt-(4-(2-ethylhexanoyl)-thieno[3,4-b]thiophene) -2,6-diyl] (PBDTTT-C), as a complementary electron-donor material, was doped into the host system of P3HT:ICBA to form ternary cascade energy structured PSCs with increased J_sc. The power conversion efficiency (PCE) of P3HT:ICBA-based cells was improved from 3.32% to 4.38% by doping with 3 wt% PBDTTT-C with 1 min 150 °C annealing treatment. The 4.38% PCE of ternary PSCs is still larger than the 3.79% PCE of PSCs based on P3HT:ICBA with 10 minutes 150 °C annealing treatment. This journal is

Original language	English
Pages (from-to)	16103-16109
Number of pages	7
Journal	Physical Chemistry Chemical Physics
Volume	16
Issue number	30
DOIs	https://doi.org/10.1039/c4cp01411a
Publication status	Published - 14 Aug 2014
Externally published	Yes

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title = "Enhanced performance of polymer solar cells by employing a ternary cascade energy structure",

abstract = "We present a route to successfully tackle the two main limitations, low open circuit voltage (Voc) and limited short circuit-density (J sc), of polymer solar cells (PSCs) based on poly(3-hexylthiophene) (P3HT) as an electron-donor. The indene-C60 bisadduct (ICBA) was selected as an electron acceptor to improve the open circuit voltage (Voc). The narrow band gap polymer poly[(4,8-bis-(2-ethylhexyloxy)-benzo[1,2-b:4,5- b′]dithiophene)-2,6-diyl-alt-(4-(2-ethylhexanoyl)-thieno[3,4-b]thiophene) -2,6-diyl] (PBDTTT-C), as a complementary electron-donor material, was doped into the host system of P3HT:ICBA to form ternary cascade energy structured PSCs with increased Jsc. The power conversion efficiency (PCE) of P3HT:ICBA-based cells was improved from 3.32\% to 4.38\% by doping with 3 wt\% PBDTTT-C with 1 min 150 °C annealing treatment. The 4.38\% PCE of ternary PSCs is still larger than the 3.79\% PCE of PSCs based on P3HT:ICBA with 10 minutes 150 °C annealing treatment. This journal is",

author = "Qiaoshi An and Fujun Zhang and Lingliang Li and Zuliang Zhuo and Jian Zhang and Weihua Tang and Feng Teng",

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AU - An, Qiaoshi

AU - Zhang, Fujun

AU - Li, Lingliang

AU - Zhuo, Zuliang

AU - Zhang, Jian

AU - Tang, Weihua

AU - Teng, Feng

PY - 2014/8/14

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N2 - We present a route to successfully tackle the two main limitations, low open circuit voltage (Voc) and limited short circuit-density (J sc), of polymer solar cells (PSCs) based on poly(3-hexylthiophene) (P3HT) as an electron-donor. The indene-C60 bisadduct (ICBA) was selected as an electron acceptor to improve the open circuit voltage (Voc). The narrow band gap polymer poly[(4,8-bis-(2-ethylhexyloxy)-benzo[1,2-b:4,5- b′]dithiophene)-2,6-diyl-alt-(4-(2-ethylhexanoyl)-thieno[3,4-b]thiophene) -2,6-diyl] (PBDTTT-C), as a complementary electron-donor material, was doped into the host system of P3HT:ICBA to form ternary cascade energy structured PSCs with increased Jsc. The power conversion efficiency (PCE) of P3HT:ICBA-based cells was improved from 3.32% to 4.38% by doping with 3 wt% PBDTTT-C with 1 min 150 °C annealing treatment. The 4.38% PCE of ternary PSCs is still larger than the 3.79% PCE of PSCs based on P3HT:ICBA with 10 minutes 150 °C annealing treatment. This journal is

AB - We present a route to successfully tackle the two main limitations, low open circuit voltage (Voc) and limited short circuit-density (J sc), of polymer solar cells (PSCs) based on poly(3-hexylthiophene) (P3HT) as an electron-donor. The indene-C60 bisadduct (ICBA) was selected as an electron acceptor to improve the open circuit voltage (Voc). The narrow band gap polymer poly[(4,8-bis-(2-ethylhexyloxy)-benzo[1,2-b:4,5- b′]dithiophene)-2,6-diyl-alt-(4-(2-ethylhexanoyl)-thieno[3,4-b]thiophene) -2,6-diyl] (PBDTTT-C), as a complementary electron-donor material, was doped into the host system of P3HT:ICBA to form ternary cascade energy structured PSCs with increased Jsc. The power conversion efficiency (PCE) of P3HT:ICBA-based cells was improved from 3.32% to 4.38% by doping with 3 wt% PBDTTT-C with 1 min 150 °C annealing treatment. The 4.38% PCE of ternary PSCs is still larger than the 3.79% PCE of PSCs based on P3HT:ICBA with 10 minutes 150 °C annealing treatment. This journal is

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Enhanced performance of polymer solar cells by employing a ternary cascade energy structure

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