Low‐Bandgap Donor/Acceptor Polymer Blend Solar Cells with Efficiency Exceeding 4%

High Performance All‐Polymer Solar Cell via Polymer Side‐Chain Engineering

“…[12][13][14][15] In early 2013, there have been two new reports with PCEs up to 3.3% [ 16 ] and 3.6%. [17][18][19] More recently, a PCE of 4.1% was reported. [ 19 ] Additionally, Poly era released an announcement of achieving a PCE as high as 6.47%, demonstrating the potential for high effi ciency with all-polymer solar cells.…”

“…[17][18][19] More recently, a PCE of 4.1% was reported. [ 19 ] Additionally, Poly era released an announcement of achieving a PCE as high as 6.47%, demonstrating the potential for high effi ciency with all-polymer solar cells. [ 7 ] Controlling phase separation is one of the most critical issues in all-polymer solar cells as it limits the generation of free charge carriers and subsequently the device performance.…”

“…The highest PCE is 4.4%, with a J SC as high as 9.0 mA cm −2 , and V OC of 1.04 V. This result represents one of the highest performance in published literature for all-polymer solar cells. [ 7,16,17,19 ] The chemical structures and energy diagrams of the donor and acceptor polymers employed herein are shown in Scheme 1 . The isoindigo polymers are selected as the donor polymers because of their low bandgaps, strong absorption, good hole charge transport, deep HOMO for potentially high V OC and good BHJ solar cell performance when combined with PCBM acceptors.…”

Ternary Blend of Conjugated Polymers for Broadening the Absorption Bandwidth of Polymer Solar Cells

“…The solution for the binary blend film was prepared by mixing PTQ1 and N2200 at a 0.7:0.3 weight ratio in chloroform, according to the method described in the previous report [6].…”

“…These properties of the polymer/polymer blend system are greatly beneficial for future applications in portable and wearable devices that require both high performances and mechanical stability [1]. Therefore, polymer/polymer blend solar cells have recently received considerable attention and significant strides have been made in improving their power conversion efficiencies (PCEs) [2][3][4][5][6][7][8].…”