Not sure what this means dollar-wise, but accord o e article, “Both – quantum dots ad perovskites can be easily placed on the surfaces and have comparable cost

Not sure what this means dollar-wise, but accord o e article, “Both – quantum dots ad perovskites can be easily placed on the surfaces and have comparable costs of production” Not sure what perovskites cost, but that should give you your answer (or a way to figure it out).